What is the meaning of Wilk?

Obsolete form of whelk.

wolf (Canis lupus)

wolf (Canis lupus; the largest wild member of the canine subfamily)

werewolf

type of equine disease; perhaps dorsal nerve palsy or skin tuberculosis

Northern cattle grub (Hypoderma bovis)

gypsywort (Lycopus europaeus)

wolf (Canis lupus; the largest wild member of the canine subfamily)

male wolf, he-wolf

German Shepherd

wolfskin

synonym of próżniak

type of peasant's game

stick holding up a thatch

synonym of świeca

snag (tree sunk in a river bed that is dangerous for those traveling by raft or boat)

meatgrinder

lupus

water sprout, water shoot

wolf (Canis lupus)

he-wolf

Source: wiktionary.org