Proto-IE: *(e)reik- (-kh-)
Meaning: to scratch, to cut
Old Indian: rikhati, likháti `to scratch, scrape', rekhā, lékhā f. `scratch, stripe, line'
Old Greek: eréi̯kō, aor. intr. ḗrike (`barst'), tr. erêi̯ksai̯, pf. p. erḗrigmai̯ `zerbrechen, zermalmen, zerreissen, bersten'
Celtic: Cymr rhwygo 'zerreissen'
Russ. meaning: царапать, надрезать
References: WP II 343 f
piet-meaning,piet-ind,piet-greek,piet-balt,piet-germ,piet-celt,piet-rusmean,piet-refer,