1) a kind of slow-moving creature, like a snail but without a shell; a bullet; to hit (a person) hard (slug)
2) not very active; slow-moving (sluggish)
giving little care or attention to one's work; loose, not pulled tight; the part of a rope etc that hangs loosely; to be lazy
loose, baggy; inactive
(capable of) acting, moving etc taking a long time; (of a person) not able to understand or learn something quickly
unhurried, lazy