From WordNet (r) 3.0 (2006) [wn]:
fisher
n 1: someone whose occupation is catching fish [syn:
fisherman, fisher]
2: large dark brown North American arboreal carnivorous mammal
[syn: fisher, pekan, fisher cat, black cat, {Martes
pennanti}]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Fisher \Fish"er\, n. [AS. fiscere.]
1. One who fishes.
[1913 Webster]
2. (Zool.) A carnivorous animal of the Weasel family
(Mustela Canadensis); the pekan; the "black cat."
[1913 Webster]