[ᴱ]^ᴺ√GYAK root. “cattle”
ᴱ√ẎAKA root. “a head of cattle”
A root in the Qenya Lexicon of the 1910s given as ᴱ√Ẏak “a head of cattle”, with derivatives ᴱQ. yak(k)o “ox” and ᴱQ. yaksi “cow” (QL/105). In the contemporaneous Gnomish Lexicon it had derivatives G. gach “a milch cow” and G. gagron “a yoke ox, bullock” (GL/38). I think it is worth positing a Neo-Root ᴺ√GYAK “cattle” to salvage these early words.
Reference ✧ QL/105 ✧ Ẏak “a head of cattle”