olvar (sg. #olva) noun "growing things with roots in the earth, *plants" (Silm). Apparently more or less the same word as olwa, olba, which is however glossed "branch". Cf. laima.
Quenya
olva
noun. plant, growing things with roots in the earth
olvar
growing things with roots in the earth, *plants
olea
adjective. growing, living (of plants etc)
A word for plants appearing only in its plural form olvar “plants” (S/45; NM/270). It may be related to the roots √OLOB “branch” and √OL “grow”, hence “growing thing” as opposed to a celva = “moving thing” (WJ/341). For purposes of Neo-Quenya, I think this word refers mainly to plants as a category of beings (as in the Plant Kingdom), as opposed to an individual plant which would laima.