Definition of smallmouth bass
: a black bass (Micropterus dolomieu) of clear rivers and lakes that is bronzy-green above and lighter below and has the vertex of the angle of the jaw falling below the eye —called also smallmouth, smallmouth black bass
First Known Use of smallmouth bass
Learn More about smallmouth bass
Seen and Heard
What made you want to look up smallmouth bass? Please tell us where you read or heard it (including the quote, if possible).