Poldor, Poldomo noun "breaker up of the hard / tough", Poldor- "land-breaker?", variant forms of Poldórëa, q.v., introduced at a time when Tolkien did not want the root POL to refer to strength or mightiness (PE17:181), cf. polda from an earlier source.
Noldorin
falf
noun. foam, breaker, foam, breaker, [G.] wave
falf
noun. foam, breaker
faltha-
verb. to foam
A noun in The Etymologies of the 1930s glossed “foam, breaker” derived from the root ᴹ√PHAL “foam” (Ety/PHAL).
Conceptual Development: An obvious precursor to this word is G. falm “a breaker, a wave” from the Gnomish Lexicon of the 1910s, derived from the early root ᴱ√fal- (GL/33); in Noldorin/Sindarin the final -m would become -f [-v]. Given the gloss “breaker” from The Etymologies, it seems likely that N. falf can also be used for a “wave”, much like its Quenya cognate Q. falma.