The Proto-Indo-European word *kā̆u-
Word *kā̆u-
Meaning owl, howl
Synonyms *b(e)u-, *bukk-, *bʰels-, *ger-, *h₂/₃uh₁e/olo-, *ul-, *reu-, *ulu-

Comments
Mallory J.P. and Adams D. (2006)