A thin opening or groove in something is a slot. You can put letters and postcards through the mail slot at the post office.

A gum ball machine has a slot for inserting a coin, and some front doors have a special slot for mail carriers to put mail in. A screwdriver fits neatly into the slot on top of a screw. Another kind of slot is a space in a schedule or calendar: "I have a half-hour slot on Thursday for our meeting." In the 14th century, a slot was "the hollow above the breastbone."

Definitions of slot
  1. noun
    a small slit (as for inserting a coin or depositing mail)
    “he put a quarter in the slot
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    coin slot
    a slot through which coins can be inserted into a slot machine
    mail slot
    a slot (usually in a door) through which mail can be delivered
    type of:
    a long narrow opening
  2. noun
    a time assigned on a schedule or agenda
    “the TV program has a new time slot
    “an aircraft landing slot
    synonyms: time slot
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    type of:
    interval, time interval
    a definite length of time marked off by two instants
  3. noun
    a position in a hierarchy or organization
    “Bob Dylan occupied the top slot for several weeks”
    “she beat some tough competition for the number one slot
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    type of:
    position, status
    the relative position or standing of things or especially persons in a society
  4. noun
    (computer) a socket in a microcomputer that will accept a plug-in circuit board
    “the PC had three slots for additional memory”
    synonyms: expansion slot
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    type of:
    an electrical (or electronic) fitting that is connected to a source of power and equipped to receive an insert
  5. noun
    a slot machine that is used for gambling
    “they spend hours and hours just playing the slots
    synonyms: one-armed bandit
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    fruit machine
    a coin-operated gambling machine that produces random combinations of symbols (usually pictures of different fruits) on rotating dials; certain combinations win money for the player
    type of:
    coin machine, slot machine
    a machine that is operated by the insertion of a coin in a slot
  6. noun
    a position in a grammatical linguistic construction in which a variety of alternative units are interchangeable
    “he developed a version of slot grammar”
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    type of:
    position, spatial relation
    the spatial property of a place where or way in which something is situated
  7. noun
    the trail of an animal (especially a deer)
    “he followed the deer's slot over the soft turf to the edge of the trees”
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    type of:
    a track or mark left by something that has passed
  8. verb
    assign a time slot
    slot a television program”
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    type of:
    plan for an activity or event
Word Family
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