dolphin
dol.phin \'da:l-f*n, 'do.l-\ n [ME, fr. MF dophin, daufin, fr. OF dalfin, fr. OProv, fr. ML]dalfinus, alter. of L delphinus, fr. Gk delphin-, delphis; akin to Gk delphys womb, Skt garbha 1a: any of various small toothed whales (family Delphinidae) with the snout more or less elongated into a beak and the neck vertebrae partially fused 1b: PORPOISE 2: either of two active pelagic percoid food fishes (genus Coryphaena ) of tropical and temperate seas cap 3: DELPHINUS 4: a spar or buoy for mooring boats
Webster's English Dictionary