The Proto-Slavic noun *vьlko-dlakь, meaning "wolf-haired" (cf. *dlaka, "animal hair", "fur"), can be reconstructed from Serbian vukòdlak, Slovenian vołkodlȃk, and Czech vlkodlak, although formal variations in Slavic languages (*vьrdl(j)ak, *vьlkdolk, *vьlklak) and the late attestation of some forms pose difficulties in tracing the origin of the term. The Greek Vrykolakas and Romanian Vîrcolac, designating vampire-like creatures in Balkan folklores, were borrowed from Slavic languages.
the proto-slavic noun *vьlko-dlakь meaning "wolf-haired" (cf *dlaka "animal hair" "fur") can be reconstructed from serbian vukòdlak slovenian vołkodlȃk and czech vlkodlak although formal variations in slavic languages (*vьrdl(j)ak *vьlkdolk *vьlklak) and the late attestation of some forms pose difficulties in tracing the origin of the term the greek vrykolakas and romanian vîrcolac designating vampire-like creatures in balkan folklores were borrowed from slavic languages