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porpoise

por·poise

porpoise

 
pronunciation:
por ps
features:
Word History, Word Explorer
part of speech: noun
inflections: porpoise, porpoises
definition 1: a mammal that lives in the ocean. Porpoises look like large fish, but they breathe air. Some kinds of porpoises have a triangular fin on their back. Porpoises are closely related to dolphins and other whales with teeth. Porpoises have a round head with a blunt snout.
definition 2: in North America, a name sometimes used for dolphins.
Word History
Porpoise comes from a French word that means "pig fish."
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  mammal, ocean