Variant of slug
- any of a large number of small, gastropod mollusks, esp. the ones resembling a land snail, but having only a rudimentary internal shell buried in the mantle
- a smooth, soft moth (family Eucleidae) or sawfly larva, resembling a slug
- a person, vehicle, etc. that moves sluggishly
Origin: Middle English slugge, slow, clumsy person or thing from Scand, as inch(es) Swedish dialect, dialectal slogga, to be sluggish from Indo-European base an unverified form (s)leu-, to hang loosely, lax from source sludge
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