Proto-IE: *kersk-
Meaning: arm
Old Indian: kiṣku- m. 'fore-arm, handle (of an axe); a k. of length measure (24 thumbs' breadths)'
Albanian: krah, gen. -u, pl. -ǝ m. рука (от плеча до кисти)
Russ. meaning: рука (arm)
References: Fraenkel 222 (different in Pok.)
Comments: Cf. *kArǝk- (perhaps the same root)