home m T.J. Proechel melon mel⋅on [mel-uhn] –noun 1. the fruit of any of various plants of the gourd family, as the muskmelon or watermelon. 2. medium crimson or deep pink. 3. the visible upper portion of the head of a surfacing whale or dolphin, including the beak, eyes, and blowhole. a b c d e f g h i j k l m n o p q r s t u v w x y z magic mast mask melon meadow meat memorial mermaid merchandise metal milky mir-mz midnight