Definition of namaycush in US English:

namaycush

(also namacush, naymacush)

noun

  • The North American lake trout, Salvelinus namaycush, which is a large greyish char.

Origin

Late 18th century; earliest use found in Journal. From Cree name:kos from Proto-Algonquian *name:kw- lake trout + *-ehs, diminutive suffix.