To clap or strike, as a bird its wings, a fish its tail, etc.; to flap.
To turn suddenly, as something broad and flat. [Colloq.] Fielding.
To strike about with something broad abd flat, as a fish with its tail, or a bird with its wings; to rise and fall; as, the brim of a hat flops.
To fall, sink, or throw one's self, heavily, clumsily, and unexpectedly on the ground. [Colloq.] Dickens.
Act of flopping. [Colloq.] W. H. Russell.
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