Proto-IE: *rewk-, -g-
Meaning: to roar, to growl
Old Greek: hom. eréu̯gomai̯ (?), aor. érüge `brüllen'
Latin: rūgīre `brüllen (bes. vom Löwen)'
Celtic: *rukt- > MIr rucht `Gebrüll, Geheul'
Russ. meaning: реветь, рычать
References: WP II 349 f
piet-meaning,piet-greek,piet-slav,piet-balt,piet-germ,piet-lat,piet-celt,piet-rusmean,piet-refer,