(floun′dər) v.i.
1. To struggle clumsily; move awkwardly as if mired or injured.
2. To proceed, as in speech or action, in a clumsy or confused manner; muddle.
—noun A stumbling or struggling motion. [? Blend of FLOUNCE² and FOUNDER²]
—floun′der·ing·ly adverb

(floun′dər) noun
1. One of certain species of flatfish, valued as a food fish; especially, the winter flounder (Pseudopleuronectes americanus) of the North Atlantic coast, and the California flounder (Platichthys stellatus).
2. Any of several flat fish other than sole. [<AF floundre, prob. <Scand. Cf. Sw. flundra.]