crack

A crack is a very narrow space, chink, or opening. If your favorite mug has a crack in it, it might leak.

A crack can be as thin as a pencil line, or a wider gap, like a crack where your foot gets stuck as you climb down the side of a mountain. Crack is also a verb, meaning "to split or break," and also "to give way under pressure," as when a suspect cracks after hours of being interrogated. An informal kind of crack is a joke: "That crack he made about my haircut really hurt my feelings."

Definitions of crack
  1. noun
    a narrow opening
    “he opened the window a crack
    synonyms: gap
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    types:
    blank, lacuna
    a blank gap or missing part
    spark gap
    the gap between two high-potential terminals
    type of:
    opening
    a vacant or unobstructed space that is man-made
  2. noun
    a long narrow opening
    synonyms: cleft, crevice, fissure, scissure
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    types:
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    chap
    a crack in a lip caused usually by cold
    chink
    a narrow opening as e.g. between planks in a wall
    crevasse
    a deep fissure
    fatigue crack
    a crack in metal resulting from metal fatigue
    break, fault, faulting, fracture, geological fault, shift
    (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
    rift
    a narrow fissure in rock
    slit
    a narrow fissure
    split
    a lengthwise crack in wood
    vent, volcano
    a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt
    inclined fault
    a geological fault in which one side is above the other
    strike-slip fault
    a geological fault in which one of the adjacent surfaces appears to have moved horizontally
    type of:
    gap, opening
    an open or empty space in or between things
  3. noun
    a blemish resulting from a break without complete separation of the parts
    “there was a crack in the mirror”
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    types:
    craze
    a fine crack in a glaze or other surface
    type of:
    blemish, defect, mar
    a mark or flaw that spoils the appearance of something (especially on a person's body)
  4. noun
    a long narrow depression in a surface
    synonyms: chap, cranny, crevice, fissure
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    type of:
    depression, impression, imprint
    a concavity in a surface produced by pressing
  5. noun
    the act of cracking something
    synonyms: cracking, fracture
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    type of:
    break, breakage, breaking
    the act of breaking something
  6. verb
    cause to become cracked
    “heat and light cracked the back of the leather chair”
    Synonyms:
    break, check
    become fractured; break or crack on the surface only
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    types:
    check, chink
    make cracks or chinks in
    fissure
    break into fissures or fine cracks
    type of:
    alter, change, modify
    cause to change; make different; cause a transformation
  7. verb
    break partially but keep its integrity
    “The glass cracked
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    types:
    chap
    crack due to dehydration
    craze
    develop a fine network of cracks
    alligator
    crack and acquire the appearance of alligator hide, as from weathering or improper application; of paint and varnishes
    type of:
    break, check
    become fractured; break or crack on the surface only
  8. verb
    become fractured; break or crack on the surface only
    “The glass cracked when it was heated”
    synonyms: break, check
    check, chink
    make cracks or chinks in
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    types:
    chap
    crack due to dehydration
    craze
    develop a fine network of cracks
    alligator
    crack and acquire the appearance of alligator hide, as from weathering or improper application; of paint and varnishes
    type of:
    change
    undergo a change; become different in essence; losing one's or its original nature
  9. verb
    break suddenly and abruptly, as under tension
    synonyms: snap
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    type of:
    break, come apart, fall apart, separate, split up
    become separated into pieces or fragments
  10. verb
    suffer a nervous breakdown
    synonyms: break up, collapse, crack up, crock up
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    type of:
    get, have, suffer, sustain
    undergo (as of injuries and illnesses)
  11. noun
    a sudden sharp noise
    “the crack of a whip”
    “he heard the cracking of the ice”
    synonyms: cracking, snap
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    type of:
    noise
    sound of any kind (especially unintelligible or dissonant sound)
  12. verb
    make a sharp sound
    synonyms: snap
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    type of:
    go, sound
    make a certain noise or sound
  13. verb
    make a very sharp explosive sound
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    type of:
    go, sound
    make a certain noise or sound
  14. verb
    hit forcefully; deal a hard blow, making a cracking noise
    “The teacher cracked him across the face with a ruler”
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    type of:
    hit
    deal a blow to, either with the hand or with an instrument
  15. noun
    witty remark
    synonyms: quip, sally, wisecrack
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    type of:
    comment, input, remark
    a statement that expresses a personal opinion or belief or adds information
  16. verb
    tell spontaneously
    crack a joke”
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    type of:
    narrate, recite, recount, tell
    narrate or give a detailed account of
  17. verb
    reduce (petroleum) to a simpler compound by cracking
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    type of:
    break down, break up, decompose, degrade
    separate (substances) into constituent elements or parts
  18. verb
    break into simpler molecules by means of heat
    “The petroleum cracked
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    type of:
    change
    undergo a change; become different in essence; losing one's or its original nature
  19. noun
    a purified and potent form of cocaine that is smoked rather than snorted; highly addictive
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    type of:
    cocain, cocaine
    a narcotic (alkaloid) extracted from coca leaves; used as a surface anesthetic or taken for pleasure; can become powerfully addictive
  20. noun
    a usually brief attempt
    “he took a crack at it”
    synonyms: fling, go, offer, pass, whirl
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    type of:
    attempt, effort, endeavor, endeavour, try
    earnest and conscientious activity intended to do or accomplish something
  21. noun
    a chance to do something
    synonyms: shot
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    type of:
    chance, opportunity
    a possibility due to a favorable combination of circumstances
  22. adjective
    of the highest quality
    “a crack shot”
    synonyms: A-one, ace, first-rate, super, tiptop, top-notch, topnotch, tops
    superior
    of high or superior quality or performance
  23. verb
    gain unauthorized access computers with malicious intentions
    “she cracked my password”
    crack a safe”
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    type of:
    break, break in
    enter someone's (virtual or real) property in an unauthorized manner, usually with the intent to steal or commit a violent act
  24. verb
    pass through (a barrier)
    “Registrations cracked through the 30,000 mark in the county”
    synonyms: break through
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    type of:
    go across, go through, pass
    go across or through
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