Mawworm
Pronunciation : Maw"worm`
Part of Speech : n.
Etymology : [Maw the belly + worm.] (Zo?l.) (a) Any intestinal worm found in the stomach, esp. the common round worm (Ascaris lumbricoides), and allied species. (b) One of the larv? of botflies of horses; a bot.
Source : Webster's Unabridged Dictionary, 1913