n. One whose occupation or sport is the catching of fish; a fisherman.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.n. plural In ornithology, specifically, the Piscatores, Totipalmati, or Steganopodes. E. Blyth.