definition of
sac

[1] #1 sac n. [pouch, sack, pocket] an enclosed space; "the trapped miners found a pocket of air". wn

[2] #2 sac n. [theca] a case or sheath especially a pollen sac or moss capsule. wn

[3] #3 sac n. [Sauk, Sac] a member of the Algonquian people formerly living in Wisconsin in the Fox River valley and on the shores of Green Bay. wn

[4] #4 sac n. a structure resembling a bag in an animal. wn