Definition of "fisher"

The fishers who live here left for the mainland only days ago as an unseasonable October storm ravaged the islands.

2021 December, The Road Ahead, Brisbane, page 43, column 1

In many ways the fisher resembles the pine marten, possessing many of the marten's tricks and manners.

1969, Rutherford George Montgomery, The Living Wilderness‎, page 13

In the southeastern United States, Krohn et al. (1994) hypothesize that the inverse relationship between captures of fishers and martens by commercial trappers may result from an interaction between competitive displacement of marten by fisher and the avoidance of areas with deep and frequent snowfalls by fishers but not martens.

1998, Thomas E. Kucera, American Marten, Fisher, Lynx, and Wolverine: Survey Methods for Their Detection‎, page 62

The term "forest carnivores" denotes a smaller group of four species - the marten, fisher, lynx, and wolverine - and is only marginally descriptive, inasmuch as it excludes many carnivores that live in forests, and includes the wolverine, which can thrive in the complete absence of trees.

2003, Cynthia J. Zabel, Robert G. Anthony, Mammal Community Dynamics, page 207