Proto-IE: *walk-, -g-
Meaning: to twist
Old Indian: valgati `to spring, bounce, leap', saṃ-valgate `to wallow, roll', abhi-valg- `to bubble up', valgā f. `bridle, rain'
Latin: valgus, -a `säbelbeinig'
Russ. meaning: крутить, валять
References: WP I 298 f