Q. Vilya pn. “(Ring) of Air”
One of the three Elvish rings of power, the Ring of Air (S/288). It might simply be vilya “air” used as a name. However, given the pattern of names for the other Elvish rings, I think it is more likely to be an adjectival formation combining the root ᴹ√WIL and the adjectival suffix -ya¹.
References ✧ LotRI; S/288; SDI1/Vilya; SI; UTI
|ᴹ√WIL||“fly, float in air”|