"Marten" is a word in ENGLISH

Any one of several fur-bearing carnivores of the genus
Mustela, closely allied to the sable. Among the more important species
are the European beech, or stone, marten (Mustela foina); the pine
marten (M. martes); and the American marten, or sable (M. Americana),
which some zoologists consider only a variety of the Russian sable.

A bird. See Martin.

The fur of the marten, used for hats, muffs, etc.