Webster’s Revised Unabridged Dictionary · 1913
Sac
Sac (sa̤k), n. (Ethnol.) See Sacs.
Sac, n. [See Sake, Soc.] (O.Eng. Law) The privilege formerly enjoyed by the lord of a manor, of holding courts, trying causes, and imposing fines. Cowell.
Sac (săk), n. [F., fr. L. saccus a sack. See Sack a bag.] 1. See 2d Sack.
2. (Biol.) A cavity, bag, or receptacle, usually containing fluid, and either closed, or opening into another cavity to the exterior; a sack.