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English definition of “slug”

slug

noun [C]  /slʌɡ/ us  

slug noun [C] (CREATURE)

a small animal with a soft body like a snail without a shell If you say that someone is a slug, you mean that the person would rather do very little or nothing at all: I suppose you think I’m a slug for not helping.

slug noun [C] (BULLET)

infml a bullet

slug noun [C] (DRINK)

infml an amount of a drink that fills your mouth: She took a huge slug of very cold water.

slug noun [C] (COIN)

a piece of metal used instead of a coin in a machine: The new toll machines will reject slugs.

slug

verb [T]  /slʌɡ/ (-gg-) infml us  

slug verb [T] (HIT)

to hit someone hard; punch: He made me so mad I wanted to slug him. If you slug a baseball, you hit it very hard.
(Definition of slug from the Cambridge Academic Content Dictionary © Cambridge University Press)
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