flop (http://definr.com/flop)

     n 1: an arithmetic operation performed on floating-point numbers;
          "this computer can perform a million flops per second"
          [syn: floating-point operation]
     2: (informal) someone who is unsuccessful [syn: dud, washout]
     3: a complete failure; "the play was a dismal flop" [syn: bust]
     4: the act of throwing yourself down; "he landed on the bed
        with a great flop" [syn: collapse]
     adv 1: with a flopping sound; "he tumbled flop into the mud"
     2: (informal) exactly; "he fell flop on his face" [syn: right]
     v 1: fall loosely; "He flopped into a chair"
     2: fall suddenly and abruptly
     3: fail utterly; collapse; "The project foundered" [syn: {fall
        through}, fall flat, founder]