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!

Qenya 

nár(e)

noun. flame

kulo

noun. flame

A word for “flame” in The Etymologies of the 1930s under the root ᴹ√KUL “golden-red”, but this word was deleted (EtyAC/KUL).