From The Collaborative International Dictionary of English v.0.48:
Sacs \Sacs\ (s[add]ks), n. pl.; sing. Sac. (Ethnol.)
A tribe of Indians, which, together with the Foxes, formerly
occupied the region about Green Bay, Wisconsin. [Written also
Sauks.]
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Sac \Sac\ (s[add]k), n. (Ethnol.)
See Sacs.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Sac \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.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Sac \Sac\ (s[a^]k), n. [F., fr. L. saccus a sack. See Sack a
bag.]
1. See 2d Sack.
[1913 Webster]
2. (Biol.) A cavity, bag, or receptacle, usually containing
fluid, and either closed, or opening into another cavity
to the exterior; a sack.
[1913 Webster]