A word in the Gnomish Lexicon of the 1910s appearing as {gwend(r)iol >>} gwenniniol “maiden (aj.), maidenly, girlish”, an adjectival form of {gwen >>} G. gwennin “girl” (GL/45).
Gnomish
iol
noun. lamb
gwenniniol
adjective. maiden(ly), girlish
elfrin(iol)
masculine name. Littleheart
-(i)ol
suffix. adjective suffix
ilfrin
masculine name. Littleheart
-r(i)ol
suffix. adjective suffix
-(r)in
suffix. adjective suffix
-ra
suffix. adjective suffix
-wed
suffix. adjective suffix
elfrith
proper name. Littleheart
-thol Reconstructed
suffix. adjective suffix
The word G. iol “lamb” appeared in the Gnomish Lexicon of the 1910s (GL/51), clearly a cognate of ᴱQ. eule of the same meaning from the early root ᴱ√EWE (QL/36), since eu usually became io in Gnomish. G. iolinc “little lamb, lambkin” is a diminutive form (GL/51).
Neo-Sindarin: I would adapt this word as ᴺS. ŷl “lamb” for purposes of Neo-Sindarin, since eu usually became ȳ in Sindarin.