Real Dictionary

sack
countable noun: A sack is a large bag made of rough woven material. Sacks are used to carry or store things such as vegetables or coal.
verb: If your employers sack you, they tell you that you can no longer work for them because you have done something that they did not like or because your work was not good enough.

sack in American English 1
a bag, esp. a large one of coarse cloth, for holding grain, foodstuffs, etc.
noun: a large bag of strong, coarsely woven material, as for grain, potatoes, or coal
transitive verb: to put into a sack or sacks

sack in American English 2
the plundering or looting, esp. by soldiers, of a captured city or town
to plunder or loot (a captured city, etc.)
noun: the plundering of a captured place; pillage
transitive verb: to pillage or loot after capture; plunder

sack in American English 3
any of various dry white wines from Spain or the Canary Islands, popular in England during the 16th and 17th cent.
noun: a strong light-colored wine formerly imported from Spain and the Canary Islands

sack in British English 1
noun: a large bag made of coarse cloth, thick paper, etc, used as a container

sack in British English 2
noun: the plundering of a place by an army or mob, usually involving destruction, slaughter, etc
verb: to plunder and partially destroy (a place)

sack in British English 3
noun: any dry white wine formerly imported into Britain from SW Europe