The Proto-Indo-European word *bʰuĝos
Word *bʰuĝos
Meaning he-goat, buck, a goat
See also Avestan: būza- ‘buck’
Lycian: puwe- ‘goat’
Synonyms *h₄eli-, *hₐeĝós, *kápros

Comments
Av. būza. Pers. /buz, Arm. buz/puz, Ir. bocc/boc, Welsh bwch, ON bukkr, Eng. buc/buck, Russ. byk, Gm. boc/Bock