Sacrifice  —n. 1 a voluntary relinquishing of something valued. B thing so relinquished. C the loss entailed. 2 a slaughter of an animal or person or surrender of a possession, as an offering to a deity. B animal, person, or thing so offered. —v. (-cing) 1 give up (a thing) as a sacrifice. 2 (foll. By to) devote or give over to. 3 (also absol.) Offer or kill as a sacrifice.  sacrificial adj. [latin: related to *sacred]