noun A bag or pouch inside a plant or animal that typically contains a fluid.
verb To sacrifice.
Kasparov sacked his queen early on in the game to gain a positional advantage against Kramnik.
noun A sacrifice.
Kasparov's queen sac early in the game gained him a positional advantage against Kramnik.
noun The privilege, formerly enjoyed by the lord of a manor, of holding courts, trying causes, and imposing fines; now used only in the phrase sac and soc or soc and sac.