A cup is a vessel used for drinking. Your grandmother might make it a habit never to go to bed without a cup of warm milk.

A cup is like a small bowl with a handle. It's also a unit of measurement in cooking — if a recipe calls for a cup of water, it's the same as eight ounces. If you cup your hands, you form them into a cup shape, which you do when you hold a baby bird or cup your hand to whisper to your friend. If you say, "Polka music's not my cup of tea," it means you don't love it.

Definitions of cup
  1. noun
    a small open container usually used for drinking; usually has a handle
    “he put the cup back in the saucer”
    “the handle of the cup was missing”
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    a cup (usually without a handle)
    chalice, goblet
    a bowl-shaped drinking vessel; especially the Eucharistic cup
    coffee cup
    a cup from which coffee is drunk
    Dixie cup, paper cup
    a disposable cup made of paper; for holding drinks
    grace cup
    cup to be passed around for the final toast after a meal
    cylix, kylix
    a shallow drinking cup with two handles; used in ancient Greece
    moustache cup, mustache cup
    a drinking cup with a bar inside the rim to keep a man's mustache out of the drink
    an ancient Greek drinking cup; two handles and footed base
    a cup from which tea is drunk
    small coffee cup; for serving black coffee
    type of:
    any object that can be used to hold things (especially a large metal boxlike object of standardized dimensions that can be loaded from one form of transport to another)
    crockery, dishware
    tableware (eating and serving dishes) collectively
  2. noun
    a United States liquid unit equal to 8 fluid ounces
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    type of:
    United States liquid unit
    a liquid unit officially adopted in the United States Customary System
  3. noun
    the quantity a cup will hold
    “he drank a cup of coffee”
    “he borrowed a cup of sugar”
    synonyms: cupful
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    type of:
    the quantity that a container will hold
  4. noun
    any cup-shaped concavity
    “bees filled the waxen cups with honey”
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    type of:
    concave shape, concavity, incurvation, incurvature
    a shape that curves or bends inward
  5. noun
    cup-shaped plant organ
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    acorn cup, cupule
    cup-shaped structure of hardened bracts at the base of an acorn
    type of:
    plant organ
    a functional and structural unit of a plant or fungus
  6. verb
    form into the shape of a cup
    “She cupped her hands”
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    type of:
    form, shape
    give shape or form to
  7. verb
    put into a cup
    cup the milk”
  8. verb
    treat by applying evacuated cups to the patient's skin
    synonyms: transfuse
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    type of:
    care for, treat
    provide treatment for
  9. noun
    a punch served in a pitcher instead of a punch bowl
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    champagne cup
    a punch containing a sparkling wine
    claret cup
    a punch made of claret and brandy with lemon juice and sugar and sometimes sherry or curacao and fresh fruit
    type of:
    an iced mixed drink usually containing alcohol and prepared for multiple servings; normally served in a punch bowl
  10. noun
    the hole (or metal container in the hole) on a golf green
    “he swore as the ball rimmed the cup and rolled away”
    “put the flag back in the cup
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    type of:
    an opening deliberately made in or through something
  11. noun
    a large metal vessel with two handles that is awarded as a trophy to the winner of a competition
    “the school kept the cups is a special glass case”
    synonyms: loving cup
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    Davis Cup
    cup awarded for the annual international team tennis competition
    type of:
    prize, trophy
    something given as a token of victory
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