dolphin definition, dolphin meaning | English dictionary

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1    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  
2    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  
3      (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  
4      (Nautical)   a post or buoy for mooring a vessel  
     (C13: from Old French dauphin, via Latin, from Greek delphin-, delphis)  

bottlenose dolphin  
      n   any dolphin of the genus Tursiops, esp. T. truncatus, some of which have been kept in captivity and trained to perform tricks  
dolphin striker  
      n     (Nautical)   a short vertical strut between the bowsprit and a rope or cable (martingale) from the end of the jib boom to the stem or bows, used for maintaining tension and preventing upward movement of the jib boom,   (Also called)    martingale boom, martingale  
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