a. A European fish (Thymallus vulgaris), allied to the
trout, but having a very broad dorsal fin; -- called also umber. It
inhabits cold mountain streams, and is valued as a game fish.
a. An American fish of the genus Thymallus, having similar
habits to the above; one species (T. Ontariensis), inhabits several
streams in Michigan; another (T. montanus), is found in the Yellowstone
region.
n. 茴鱼, 眼蝶