- any of various marine cetacean mammals of the family Delphinidae, esp Delphinus delphis, that are typically smaller than whales and larger than porpoises and have a beaklike snout
- river dolphin ⇒ any freshwater cetacean of the family Platanistidae, inhabiting rivers of North and South America and S Asia. They are smaller than marine dolphins and have a longer narrower snout
Also called: dorado either of two large marine percoid fishes, Coryphaena hippurus or C. equisetis, that resemble the cetacean dolphins and have an iridescent coloration
- a post or buoy for mooring a vessel
WordReference Random House Learner's Dictionary of American English © 2015
- Mammalsa small-toothed mammal of the sea having a beaklike nose and mouth. Compare porpoise.
- FishAlso called ˈdol•phinˌfish mahimahi. either of two large, slender fishes of warm and temperate seas.