Source : Webster's Revised Unabridged Dictionary (1913)

Sell \Sell\, v. t. [imp. & p. p. {Sold}; p. pr. & vb. n.
   {Selling}.] [OE. sellen, sillen, AS. sellan, syllan, to give,
   to deliver; akin to OS. sellian, OFries. sella, OHG. sellen,
   Icel. selja to hand over, to sell, Sw. s["a]lja to sell, Dan.
   s?lge, Goth. saljan to offer a sacrifice; all from a noun
   akin to E. sale. Cf. {Sale}.]
   1. To transfer to another for an equivalent; to give up for a
      valuable consideration; to dispose of in return for
      something, especially for money.

            If thou wilt be perfect, go and sell that thou hast,
            and give to the poor.                 --Matt. xix.
                                                  21.

            I am changed; I'll go sell all my land. --Shak.

   Note: Sell is corellative to buy, as one party buys what the
         other sells. It is distinguished usually from exchange
         or barter, in which one commodity is given for another;
         whereas in selling the consideration is usually money,
         or its representative in current notes.

   2. To make a matter of bargain and sale of; to accept a price
      or reward for, as for a breach of duty, trust, or the
      like; to betray.

            You would have sold your king to slaughter. --Shak.

   3. To impose upon; to trick; to deceive; to make a fool of;
      to cheat. [Slang] --Dickens.

   {To sell one's life dearly}, to cause much loss to those who
      take one's life, as by killing a number of one's
      assailants.

   {To sell} (anything) {out}, to dispose of it wholly or
      entirely; as, he had sold out his corn, or his interest in
      a business.

Sold \Sold\,
   imp. & p. p. of {Sell}.

Sold \Sold\, n. [F. solde. See {Soldier}, and cf. {Sou}.]
   Solary; military pay. [Obs.] --Spenser.

Source : WordNet®

sell
     n : the activity of persuading someone to buy; "it was a hard
         sell"
     [also: {sold}]

sell
     v 1: exchange or deliver for money or its equivalent; "He sold
          his house in January"; "She sells her body to survive
          and support her drug habit" [ant: {buy}]
     2: be sold at a certain price or in a certain way; "These books
        sell like hot cakes"
     3: do business; offer for sale as for one's livelihood; "She
        deals in gold"; "The brothers sell shoes" [syn: {deal}, {trade}]
     4: persuade somebody to accept something; "The French try to
        sell us their image as great lovers"
     5: give up for a price or reward; "She sold her principles for
        a successful career"
     6: deliver to an enemy by treachery; "Judas sold Jesus"; "The
        spy betrayed his country" [syn: {betray}]
     7: be approved of or gain acceptance; "The new idea sold well
        in certain circles"
     8: be responsible for the sale of; "All her publicity sold the
        products"
     [also: {sold}]

sold
     adj : disposed of to a purchaser; "this merchandise is sold" [ant:
            {unsold}]

sold
     See {sell}