The noun sack has 9 senses (first 1 from tagged texts)
1. (1) sack, poke, paper bag, carrier bag -- (a bag made of paper or plastic for holding customer's purchases)
2. pouch, sac, sack, pocket -- (an enclosed space; "the trapped miners found a pocket of air")
3. sack, sackful -- (the quantity contained in a sack)
4. sack -- (any of various light dry strong white wine from Spain and Canary Islands (including sherry))
5. sack, sacque -- (a woman's full loose hiplength jacket)
6. hammock, sack -- (a hanging bed of canvas or rope netting (usually suspended between two trees); swings easily)
7. chemise, sack, shift -- (a loose-fitting dress hanging straight from the shoulders without a waist)
8. sack -- (the plundering of a place by an army or mob; usually involves destruction and slaughter; "the sack of Rome")
9. dismissal, dismission, discharge, firing, liberation, release, sack, sacking -- (the termination of someone's employment (leaving them free to depart))
Overview of verb sack
The verb sack has 4 senses (first 1 from tagged texts)
1. (1) sack, plunder -- (plunder (a town) after capture; "the barbarians sacked Rome")
2. fire, give notice, can, dismiss, give the axe, send away, sack, force out, give the sack, terminate -- (terminate the employment of; "The boss fired his secretary today"; "The company terminated 25% of its workers")
3. net, sack, sack up, clear -- (make as a net profit; "The company cleared $1 million")
4. sack -- (put in a sack; "The grocer sacked the onions")