Broadfins

Part of speech: noun

Definitions

1. Fish that have unusually wide fins, including several species of shark known by this name
2. Marine creatures whose fins are notably broad, such as the broadfin shark and related species
3. Kinds of fish characterized by expansive, flattened fins, among them certain sharks and small freshwater species

Etymology: "Broadfins" is the plural of "broadfin," a compound of two Old English words. "Broad" comes from Old English "brād," meaning spread out or wide, and "fin" comes from Old English "finn," the organ a fish uses to swim. The compound is a plain descriptive coinage, naming a creature by the width of its fins, and it is used for certain fish, most often broadfin sharks.