Source : Webster's Revised Unabridged Dictionary (1913)

Can \Can\, v. t. & i.

   Note: [The transitive use is obsolete.] [imp. {Could}.] [OE.
         cunnen, cannen (1st sing. pres. I can), to know, know
         how, be able, AS. cunnan, 1st sing. pres. ic cann or
         can, pl. cunnon, 1st sing. imp. c[=u][eth]e (for
         cun[eth]e); p. p. c[=u][eth] (for cun[eth]); akin to
         OS. Kunnan, D. Kunnen, OHG. chunnan, G. k["o]nnen,
         Icel. kunna, Goth. Kunnan, and E. ken to know. The
         present tense I can (AS. ic cann) was originally a
         preterit, meaning I have known or Learned, and hence I
         know, know how. [root]45. See {Ken}, {Know}; cf. {Con},
         {Cunning}, {Uncouth}.]
   1. To know; to understand. [Obs.]

            I can rimes of Rodin Hood.            --Piers
                                                  Plowman.

            I can no Latin, quod she.             --Piers
                                                  Plowman.

            Let the priest in surplice white, That defunctive
            music can.                            --Shak.

   2. To be able to do; to have power or influence. [Obs.]

            The will of Him who all things can.   --Milton.

            For what, alas, can these my single arms? --Shak.

            M[ae]c[ae]nas and Agrippa, who can most with
            C[ae]sar.                             --Beau. & Fl.

   3. To be able; -- followed by an infinitive without to; as, I
      can go, but do not wish to.

   Syn: {Can but}, {Can not but}. It is an error to use the
        former of these phrases where the sens requires the
        latter. If we say, ``I can but perish if I go,'' ``But''
        means only, and denotes that this is all or the worst
        that can happen. When the apostle Peter said. ``We can
        not but speak of the things which we have seen and
        heard.'' he referred to a moral constraint or necessety
        which rested upon him and his associates; and the
        meaning was, We cannot help speaking, We cannot refrain
        from speaking. This idea of a moral necessity or
        constraint is of frequent occurrence, and is also
        expressed in the phrase, ``I can not help it.'' Thus we
        say. ``I can not but hope,'' ``I can not but believe,''
        ``I can not but think,'' ``I can not but remark,'' etc.,
        in cases in which it would be an error to use the phrase
        can but.

              Yet he could not but acknowledge to himself that
              there was something calculated to impress awe, . .
              . in the sudden appearances and vanishings . . .
              of the masque                       --De Quincey.

              Tom felt that this was a rebuff for him, and could
              not but understand it as a left-handed hit at his
              employer.                           --Dickens.

Can \Can\,
   an obs. form of began, imp. & p. p. of {Begin}, sometimes
   used in old poetry.

   Note: [See {Gan}.]

               With gentle words he can faile gree. --Spenser.

Can \Can\, n. [OE. & AS. canne; akin to D. Kan, G. Kanne, OHG.
   channa, Sw. Kanna, Dan. kande.]
   1. A drinking cup; a vessel for holding liquids. --[Shak. ]

            Fill the cup and fill can, Have a rouse before the
            morn.                                 --Tennyson.

   2. A vessel or case of tinned iron or of sheet metal, of
      various forms, but usually cylindrical; as, a can of
      tomatoes; an oil can; a milk can.

   Note: A can may be a cylinder open at the top, as for
         receiving the sliver from a carding machine, or with a
         removable cover or stopper, as for holding tea, spices,
         milk, oysters, etc., or with handle and spout, as for
         holding oil, or hermetically sealed, in canning meats,
         fruits, etc. The name is also sometimes given to the
         small glass or earthenware jar used in canning.

Can \Can\, v. t. [imp. & p. p. {Canned}; p. pr. &vb. n.
   {Canning}.]
   To preserve by putting in sealed cans [U. S.] ``Canned
   meats'' --W. D. Howells.

   {Canned goods}, a general name for fruit, vegetables, meat,
      or fish, preserved in hermetically sealed cans.

Source : WordNet®

can
     n 1: airtight sealed metal container for food or drink or paint
          etc. [syn: {tin}, {tin can}]
     2: the quantity contained in a can [syn: {canful}]
     3: a buoy with a round bottom and conical top [syn: {can buoy}]
     4: the fleshy part of the human body that you sit on; "he
        deserves a good kick in the butt"; "are you going to sit
        on your fanny and do nothing?" [syn: {buttocks}, {nates},
        {arse}, {butt}, {backside}, {bum}, {buns}, {fundament}, {hindquarters},
         {hind end}, {keister}, {posterior}, {prat}, {rear}, {rear
        end}, {rump}, {stern}, {seat}, {tail}, {tail end}, {tooshie},
         {tush}, {bottom}, {behind}, {derriere}, {fanny}, {ass}]
     5: a plumbing fixture for defecation and urination [syn: {toilet},
         {commode}, {crapper}, {pot}, {potty}, {stool}, {throne}]
     6: a room equipped with toilet facilities [syn: {toilet}, {lavatory},
         {lav}, {john}, {privy}, {bathroom}]
     [also: {canning}, {canned}]

can
     v 1: preserve in a can or tin; "tinned foods are not very tasty"
          [syn: {tin}, {put up}]
     2: terminate the employment of; "The boss fired his secretary
        today"; "The company terminated 25% of its workers" [syn:
        {fire}, {give notice}, {dismiss}, {give the axe}, {send
        away}, {sack}, {force out}, {give the sack}, {terminate}]
        [ant: {hire}]
     [also: {canning}, {canned}]

Source : Free On-Line Dictionary of Computing

CAN
     
        {Cancel}