[1] : The Collaborative International Dictionary of English v.0.48

buy \buy\ bimac, v. t. imp.  p. p. bought baddt; p.
   pr.  vb. n. buying bimac"i^ng. oe. buggen, buggen,
   bien, as. bycgan, akin to os. buggean, goth. bugjan.
   1. to acquire the ownership of property by giving an
      accepted price or consideration therefor, or by agreeing
      to do so; to acquire by the payment of a price or value;
      to purchase; -- opposed to sell.
      1913 webster

            buy what thou hast no need of, and ere long thou
            wilt sell thy necessaries.            --b. franklin.
      1913 webster

   2. to acquire or procure by something given or done in
      exchange, literally or figuratively; to get, at a cost or
      sacrifice; to buy pleasure with pain.
      1913 webster

            buy the truth and sell it not; also wisdom, and
            instruction, and understanding.       --prov. xxiii.
                                                  23.
      1913 webster

   to buy again. see againbuy. obs. --chaucer.

   to buy off.
      a to influence to compliance; to cause to bend or yield
          by some consideration; as, to buy off conscience.
      b to detach by a consideration given; as, to buy off one
          from a party.

   to buy out
      a to buy off, or detach from. --shak.
      b to purchase the share or shares of in a stock, fund,
          or partnership, by which the seller is separated from
          the company, and the purchaser takes his place; as, a
          buys out b.
      c to purchase the entire stock in trade and the good
          will of a business.

   to buy in, to purchase stock in any fund or partnership.

   to buy on credit, to purchase, on a promise, in fact or in
      law, to make payment at a future day.

   to buy the refusal of anything, to give a consideration
      for the right of purchasing, at a fixed price, at a future
      time.
      1913 webster
see also:
bought buying to buy again againbuy to buy off to buy out 
to buy in to buy on credit to buy the refusal 

Again >> A Words
Again, definition of term: Again
again_pag1.html

Buy >> B Words
Buy, definition of term: Buy
buy_pag1.html

Buy Out >> B Words
Buy Out, definition of term: Buy Out
buy+out_pag1.html

Buy Into >> B Words
Buy Into, definition of term: Buy Into
buy+into_pag1.html

Buy In >> B Words
Buy In, definition of term: Buy In
buy+in_pag1.html

Once Again >> O Words
Once Again, definition of term: Once Again
once+again_pag1.html

Born Again >> B Words
Born Again, definition of term: Born Again
born+again_pag1.html

Then Again >> T Words
Then Again, definition of term: Then Again
then+again_pag1.html

Buy The Farm >> B Words
Buy The Farm, definition of term: Buy The Farm
buy+the+farm_pag1.html