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.

Source : WordNet®

selling
     n : the exchange of goods for an agreed sum of money [syn: {merchandising},
          {marketing}]