v. t. [ imp. & p. p. Flopped p. pr. & vb. n. Flopping. ] [ A variant of flap. ] 1. To clap or strike, as a bird its wings, a fish its tail, etc.; to flap. [ 1913 Webster ]
2. To turn suddenly, as something broad and flat. [ Colloq. ] Fielding. [ 1913 Webster ]
v. i. 1. To strike about with something broad and flat, as a fish with its tail, or a bird with its wings; to rise and fall; as, the brim of a hat flops. [ 1913 Webster ]
2. To fall, sink, or throw one's self, heavily, clumsily, and unexpectedly on the ground. [ Colloq. ] Dickens. [ 1913 Webster ]