{Sack bearer} (Zo["o]l.). See {Basket worm}, under {Basket}. {Sack tree} (Bot.), an East Indian tree ({Antiaris saccidora}) which is cut into lengths, and made into sacks by turning the bark inside out, and leaving a slice of the wood for a bottom. {To give the sack to} or {get the sack}, to discharge, or be discharged, from employment; to jilt, or be jilted. [Slang]