Source : Webster's Revised Unabridged Dictionary (1913)

Sack \Sack\ (s[scr]k), n. [OE. seck, F. sec dry (cf. Sp. seco,
   It. secco), from L. siccus dry, harsh; perhaps akin to Gr.
   'ischno`s, Skr. sikata sand, Ir. sesc dry, W. hysp. Cf.
   {Desiccate}.]
   A name formerly given to various dry Spanish wines. ``Sherris
   sack.'' --Shak.

   {Sack posset}, a posset made of sack, and some other
      ingredients.

Sack \Sack\, n. [OE. sak, sek, AS. sacc, s[ae]cc, L. saccus, Gr.
   sa`kkos from Heb. sak; cf. F. sac, from the Latin. Cf. {Sac},
   {Satchel}, {Sack} to plunder.]
   1. A bag for holding and carrying goods of any kind; a
      receptacle made of some kind of pliable material, as
      cloth, leather, and the like; a large pouch.

   2. A measure of varying capacity, according to local usage
      and the substance. The American sack of salt is 215
      pounds; the sack of wheat, two bushels. --McElrath.

   3. [Perhaps a different word.] Originally, a loosely hanging
      garment for women, worn like a cloak about the shoulders,
      and serving as a decorative appendage to the gown; now, an
      outer garment with sleeves, worn by women; as, a dressing
      sack. [Written also {sacque}.]

   4. A sack coat; a kind of coat worn by men, and extending
      from top to bottom without a cross seam.

   5. (Biol.) See 2d {Sac}, 2.

Sack \Sack\, v. t. [imp. & p. p. {Sacked}; p. pr. & vb. n.
   {Sacking}.] [See {Sack} pillage.]
   To plunder or pillage, as a town or city; to devastate; to
   ravage.

         The Romans lay under the apprehensions of seeing their
         city sacked by a barbarous enemy.        --Addison.

Sack \Sack\, v. t.
   1. To put in a sack; to bag; as, to sack corn.

            Bolsters sacked in cloth, blue and crimson. --L.
                                                  Wallace.

   2. To bear or carry in a sack upon the back or the shoulders.
      [Colloq.]

Sack \Sack\, n. [F. sac plunder, pillage, originally, a pack,
   packet, booty packed up, fr. L. saccus. See {Sack} a bag.]
   The pillage or plunder, as of a town or city; the storm and
   plunder of a town; devastation; ravage.

         The town was stormed, and delivered up to sack, -- by
         which phrase is to be understood the perpetration of
         all those outrages which the ruthless code of war
         allowed, in that age, on the persons and property of
         the defenseless inhabitants, without regard to sex or
         age.                                     --Prescott.

Source : WordNet®

sack
     v 1: plunder (a town) after capture; "the barbarians sacked Rome"
          [syn: {plunder}]
     2: terminate the employment of; "The boss fired his secretary
        today"; "The company terminated 25% of its workers" [syn:
        {fire}, {give notice}, {can}, {dismiss}, {give the axe}, {send
        away}, {force out}, {give the sack}, {terminate}] [ant: {hire}]
     3: make as a net profit; "The company cleared $1 million" [syn:
         {net}, {sack up}, {clear}]
     4: put in a sack; "The grocer sacked the onions"

sack
     n 1: a bag made of paper or plastic for holding customer's
          purchases [syn: {poke}, {paper bag}, {carrier bag}]
     2: an enclosed space; "the trapped miners found a pocket of
        air" [syn: {pouch}, {sac}, {pocket}]
     3: the quantity contained in a sack [syn: {sackful}]
     4: any of various light dry strong white wine from Spain and
        Canary Islands (including sherry)
     5: a woman's full loose hiplength jacket [syn: {sacque}]
     6: a hanging bed of canvas or rope netting (usually suspended
        between two trees); swing easily [syn: {hammock}]
     7: a loose-fitting dress hanging straight from the shoulders
        without a waist [syn: {chemise}, {shift}]
     8: the plundering of a place by an army or mob; usually
        involves destruction and slaughter; "the sack of Rome"
     9: the termination of someone's employment (leaving them free
        to depart) [syn: {dismissal}, {dismission}, {discharge}, {firing},
         {liberation}, {release}, {sacking}]