noun, plural warmouths [wawr-mouthz, -mouths] . (especially collectively) warmouth.
a freshwater sunfish, Lepomis gulosus, of the eastern U.S., having a patch of small teeth on its tongue.

1880–85, Americanism; origin uncertain

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In some of the lakes you can find channel catfish, bullheads, crappie and warmouth.
Other species collected included seven channel catfish, three warmouth and one yellow bullhead.
Warmouth and yellow bullhead were the other two species sampled.
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