The definition of a dolphin is a smart, sociable, friendly whale with a fin on its back.(noun)
An example of a dolphin is a friendly whale that lives in the oceans or at aquariums.
See dolphin in Webster's New World College Dictionary
Origin: ME dolfin < OFr dalphin < VL dalfinus, for L delphinus < Gr delphinos, gen. of delphis (< IE base *gwelbh-): so named from its shape
See dolphin in American Heritage Dictionary 4
noun pl. Dolphin dolphin or dol·phins
Origin: Middle English
Origin: , from Old French daulfin
Origin: , blend of daufin
Origin: and Old Provençal dalfin
Origin: , both from Medieval Latin *dalfinus
Origin: , from Latin delphīnus
Origin: , from Greek delphīs, delphīn-
Origin: , from delphus, womb (from its shape).
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