Quenya 

fá Archaic

noun. *ray of light, flame

An (archaic) Parmaquesta (PQ) noun in the Outline of Phonology (OP2) from the 1950s derived from primitive ✶phāy as an example of how ancient final *y* vanished after long vowels in monosyllables (PE19/104). A few pages earlier, primitive ✶phāy was glossed “flame, ray of light” (PE17/102), so perhaps this was the intended meaning of fá also. But Tolkien said it was given up in favor of the longer form fëa (PE19/104), which elsewhere was usually translated as “spirit”.

Neo-Quenya: Given that this word is archaic and is of uncertain meaning, I would avoid its use for purposes of Neo-Quenya, using words like ᴹQ. alka for “ray of light” and Q. fëa for “spirit”.

fá

noun. breath, puff of breath