Source : Webster's Revised Unabridged Dictionary (1913)

Polyneme \Pol"y*neme\, n. [Poly- + Gr. ? thread.] (Zo["o]l.)
   Any one of numerous species of tropical food fishes of the
   family {Polynemid[ae]}. They have several slender filaments,
   often very long, below the pectoral fin. Some of them yield
   isinglass of good quality. Called also {threadfish}.