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 (sôk) also Sac (săk, sôk)
n. pl. Sauk or Sauks also Sac or Sacs
1. A member of a Native American people formerly inhabiting parts of Wisconsin, Illinois, and Iowa, with a present-day population mainly in Oklahoma. Sauk resistance to removal from their Illinois lands ended in 1832 with the Black Hawk War.
2. The Algonquian language of the Sauk, dialectally related to Fox.

[North American French saki, from Sauk asaakiiha.]
References in classic literature ?
If I could but remove the terrible menace of certain death hidden in the poison sacs that fed the sting the struggle would be less unequal.
Look," he continued, drawing his dagger and making an incision in the carcass a foot above the root of the sting, from which he presently drew forth two sacs, each of which held fully a gallon of the deadly liquid.
Quand un bon vin meuble mon estomac, Je suis plus savant que Balzac - Plus sage que Pibrac ; Mon brass seul faisant l'attaque De la nation Coseaque, La mettroit au sac ; De Charon je passerois le lac, En dormant dans son bac ; J'irois au fier Eac, Sans que mon cœur fit tic ni tac, Présenter du tabac.
If I had known it was a cul de sac -- however, there isn't any excusing a blunder like that, let it go.
This, I believe, is the bottom of a most delicate, colourless sac, composed of a pulpy substance, which lines the exterior case, but does not extend within the extreme conical points.
Instead of going to the right places--banks, police stations, rendezvous-- he systematically went to the wrong places; knocked at every empty house, turned down every cul de sac, went up every lane blocked with rubbish, went round every crescent that led him uselessly out of the way.
In dogs, anal sacs are considered vestigial, sort of like the human appendix.
Wobbles may have anal sacs that have filled with normal glandular secretions or the sacs may have become infected.
The primitive role of egg sacs is in giving protection against predators and parasites.
The odor sacs also seem to play a role in expressive wing shakes directed toward bats outside the harem territory.