Proto-IE: *ikʷ[e]r-
Meaning: fish-egg
Celtic: *ikʷōr, *ikʷr-: MIr iuchair, gen. uchrach f. `Fischrogen'
Russ. meaning: икра (рыбы)
References: WP I 205 f
Comments: The frequently quoted OPrus. yccroy "Fischrogen" means 'Wade' (Voc. 142); may belong to the 'liver' root *yekʷ-.