\Boun"cer\, n.
1. One who bounces; a large, heavy person who makes much
   noise in moving.
2. A boaster; a bully. [Collog.] --Johnson.
3. A bold lie; also, a liar. [Collog.] --Marryat.
4. Something big; a good stout example of the kind.
         The stone must be a bouncer.          --De Quincey.