(sak) noun
1. A bag for holding bulky articles.
2. A measure or weight of varying amount.
3. A loosely hanging dress without a waistline, often worn without a belt: also spelled sacque: also sack dress.
4. Slang Dismissal: especially in the phrases to get the sack, to give (someone) the sack.
5. In baseball slang, a base.
6. Slang A bed; mattress.
—to be left holding the sack Slang To be left to take the consequences of a bad situation.
—v.t.
1. To put into a sack or sacks.
2. To dismiss, as a servant. [OE sacc <L saccus <Gk. sakkos <Hebrew saq sackcloth, a grain sack. Doublet of SAC.]
Sack may appear as a combining form in hyphemes or solidemes, or as the first element in two–word phrases, with the meaning of the noun (def. 1):

(sak) v.t.
To plunder or pillage (a town or city) after capturing.
—noun
1. The pillaging of a captured town or city.
2. Loot; booty obtained by pillage. [<MF sac <Ital. sacco, orig. plunder <Med. L saccare pillage <L saccus a sack; from the use of sacks in carrying off plunder]
—sack′er noun

(sak) noun
Light–colored Spanish dry wine; also, any strong white wine from southern Europe. [Earlier (wyne)seck <F (vin) sec a dry (wine) <L siccus dry]