fisher

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One that fishes, as a person or ship engaged in fishing.
• noun A carnivorous mammal (Martes pennanti) of northern North America, having thick, dark-brown fur.
• noun The fur of this animal.

from The Century Dictionary.

• noun One whose occupation or sport is the catching of fish; a fisherman.
• noun The pekan, wejack, black-cat, or Pennant's marten, Mustela pennanti of Erxleben (1777), M. canadensis of Schreber (1778), the largest North American carnivorous quadruped of the family Mustelidæ and subfamily Mustelinæ with the exception of the wolverene: so called from its habit of catching fish.
• noun plural In ornithology, specifically, the Piscatores, Totipalmati, or Steganopodes. E. Blyth.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who fishes.
• noun (Zoöl.) A carnivorous animal of the Weasel family (Mustela Canadensis); the pekan; the “black cat.”

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A North American marten that has thick brown fur, Martes pennanti.
• noun The fur of this animal.
• noun A person or ship that is engaged in fishing.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun someone whose occupation is catching fish
• noun large dark brown North American arboreal carnivorous mammal