A bang is a loud noise, like a door slamming or something heavy being dropped on a wood floor. Hearing a bang outside your house at night might make your dog start barking.

The sharp sound of a bang might be made by someone pounding on your front door, or two cars colliding. A bang can also be a painful physical knock, like a bang on your head when you crash your bike. You can use it as a verb as well: "Don't bang your laptop down on the table — you'll break it!" Bang shares a Scandinavian root with the Old Norse banga, "to pound."

Definitions of bang
  1. noun
    the swift release of a store of affective force
    “they got a great bang out of it”
    synonyms: boot, charge, flush, kick, rush, thrill
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    type of:
    excitement, exhilaration
    the feeling of lively and cheerful joy
  2. noun
    a vigorous blow
    “he got a bang on the head”
    synonyms: bash, belt, knock, smash
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    type of:
    blow, bump
    an impact (as from a collision)
  3. noun
    a sudden very loud noise
    synonyms: bam, blast, clap, eruption
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    water hammer
    the banging sound of steam in pipes
    type of:
    sound of any kind (especially unintelligible or dissonant sound)
  4. verb
    to produce a sharp often metallic explosive or percussive sound
    “One of them banged the sash of the window nearest my bed”
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    type of:
    go, sound
    make a certain noise or sound
  5. verb
    strike violently
    synonyms: slam
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    type of:
    deal a blow to, either with the hand or with an instrument
  6. verb
    close violently
    synonyms: slam
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    type of:
    close, shut
    move so that an opening or passage is obstructed; make shut
  7. verb
    move noisily
    “The window banged shut”
    “The old man banged around the house”
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    type of:
    go, locomote, move, travel
    change location; move, travel, or proceed, also metaphorically
  8. verb
    leap, jerk, bang
    synonyms: spang
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    type of:
    collide with, hit, impinge on, run into, strike
    hit against; come into sudden contact with
  9. noun
    a border of hair that is cut short and hangs across the forehead
    synonyms: fringe
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    type of:
    coif, coiffure, hair style, hairdo, hairstyle
    the arrangement of the hair (especially a woman's hair)
  10. noun
    a conspicuous success
    “the party went with a bang
    synonyms: hit, smash, smasher, strike
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    blockbuster, megahit, smash hit
    an unusually successful hit with widespread popularity and huge sales (especially a movie or play or recording or novel)
    an unexpected hit
    type of:
    an attainment that is successful
  11. verb
    have sexual intercourse with
    synonyms: have intercourse, have sex, love, roll in the hay
    make out, neck
    kiss, embrace, or fondle with sexual passion
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    have, take
    have sex with; archaic use
    have sex without being married
    engage freely in promiscuous sex, often with the husband or wife of one's friends
    bed-hop, bedhop, sleep around
    be sexually active with more than one partner
  12. adverb
    “he ran bang into the pole”
    synonyms: bolt, slap, slapdash, smack
Word Family

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