Proto-IE: *kʷert-
Meaning: time (e. g. for the second ~)
Old Indian: sakŕ̥t 'once, at once', kŕ̥tvaḥ `... fold'
Avestan: ha-kǝrǝt_ `einmal'
Other Italic: Osk petiro-pert `viermal, Umbr trio-per `dreimal' (the latter under the influence of another root, same as in Lat sem-per)
Russ. meaning: раз
References: WP II 573 f
