- A small European fresh-water cyprinoid fish (Phoxinus
laevis, formerly Leuciscus phoxinus); sometimes applied also to the
young of larger kinds; -- called also minim and minny. The name is also
applied to several allied American species, of the genera Phoxinus,
Notropis, or Minnilus, and Rhinichthys. - Any of numerous small American cyprinodont fishes of the
genus Fundulus, and related genera. They live both in fresh and in salt
water. Called also killifish, minny, and mummichog.