laugher

from WordNet (r) 3.0 (2006)

laugher
    n 1: a person who is laughing or who laughs easily
    2: an easy victory [syn: {runaway}, {blowout}, {romp},
       {laugher}, {shoo-in}, {walkaway}]

from The Collaborative International Dictionary of English v.0.48

Laugher \Laugh"er\, n.
   1. One who laughs.
      [1913 Webster]

   2. A variety of the domestic pigeon.
      [1913 Webster]

   3. A contest in which one side wins easily; a lopsided
      victory. [Informal]
      [PJC]

   4. A blatantly false statement, especially a self-serving
      one. [Slang]
      [PJC]