fisher

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One that fishes, as a person or ship engaged in fishing.
2. n. A carnivorous mammal (Martes pennanti) of northern North America, having thick, dark-brown fur. Also called pekan, wejack.
3. n. The fur of this animal.

Century Dictionary and Cyclopedia

1. n. One whose occupation or sport is the catching of fish; a fisherman.
2. n. 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. It is a kind of marten or sable, peculiar to the northern parts of North America, and quite distinct from any other species. The length is 2 or 3 feet, generally about 30 inches, from the nose to the root of the tail, which measures from 14 to 20 inches more. The color is black or blackish, generally darker below than above, lightening by mixture of gray or brown on the upper fore parts and head, and there is no light throat-patch. The ears are low, wide, and semicircular, and the physiognomy is characteristic in comparison with other martens. The pelt is valuable. Also called blackfox.
3. n. plural In ornithology, specifically, the Piscatores, Totipalmati, or Steganopodes. E. Blyth.

Wiktionary

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

GNU Webster's 1913

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

WordNet 3.0

1. n. someone whose occupation is catching fish
2. n. large dark brown North American arboreal carnivorous mammal