Loach \Loach\ (l[=o]ch), n. [OE. loche, F. loche.] (Zool.)
Any one of several small, fresh-water, cyprinoid fishes of
the genera {Cobitis}, {Nemachilus}, and allied genera, having
six or more barbules around the mouth. They are found in
Europe and Asia. The common European species ({Nemachilus
barbatulus}) is used as a food fish.
[1913 Webster]