n.someone who sets traps for animals (usually to obtain their furs)

Hunters and trappers scent pad
Tappers and Trappers: Parallel Process in Acculturation
The hole trappers related to lead vacancy in PbWO 4 crystal
Spin-trappers and vitamin E prolong endurance to muscle fatigue in mice.
Aimard's Border Tales: the Trappers of Arkansas; Or, the Loyal Heart
Association of no syntase inhibitors with trappers of oxygen reactive forms
Indians in the fur trade : their role as trappers, hunters, and middlemen in the lands southwest of Hudson Bay, 1660-1870
Indians in the Fur Trade: Their Role as Trappers, Hunters, and Middlemen in the Lands Southwest of Hudson Bay, 1660–1870
Failure to identify alveolar echinococcosis in trappers from South Dakota in spite of high prevalence of Echinococcus multilocularis...
Seroepidemiologic study of three zoonoses (leptospirosis, Q fever, and tularemia) among trappers in Québec, Canada.