Definition of largemouth bass
: a large North American black bass (Micropterus salmoides) that is blackish green above and lighter below and has the maxillary bones of the upper jaw extending to behind the eyes
— called also largemouth, largemouth black bass
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Merriam-Webster unabridged
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Time Traveler for largemouth bass
The first known use of largemouth bass was in 1922
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