Qenya
lindornea
adjective. having many oaks
lin-
prefix. many
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A word in The Etymologies of the 1930s glossed “having many oak-trees” or “having many oaks”, a combination of ᴹQ. lin- “many” and an adjectival form of ᴹQ. norno “oak”, where the more ancient initial consonant d- was preserved/restored in the compound (Ety/DÓRON, LI).