- 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 © 2016
- 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.
- Mammalsany of several chiefly marine, cetacean mammals of the family Delphinidae, having a fishlike body, numerous teeth, and the front of the head elongated into a beaklike projection.
- FishAlso called dolphinfish, mahimahi. either of two large, slender fishes, Coryphaena hippurus or C. equisetis, of warm and temperate seas.
- Naval Termsa pile, cluster of piles, or buoy to which a vessel may be moored in open water.
- Naval Termsa cluster of piles used as a fender, as at the entrance to a dock.
- Naval Termsa pudding fender at the nose of a tugboat or on the side of a vessel.
- (cap.) [Astron.]the constellation Delphinus.
- Greek delphí̄n
- Vulgar Latin *dalfīnus, Latin delphīnus
- Old Provencal dalfin
- Old French daulphin
- Middle English dolphyn 1300–50