Meaning of stoneroller

stone•roll•er

Pronunciation: (stōn'rō"lur), [key]
— n.
  1. an American minnow, Campostoma anomalum, named from its habit of moving stones as it feeds.
  2. any of several other minnows or suckers with similar habits, as Hypentelium nigricans.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.