hwesta (1) noun "breeze, breath, puff of air" (SWES), also name of tengwa #12 (Appendix E, VT46:17); hwesta sindarinwa "Grey-elven hw", name of tengwa #34 (Appendix E).
Quenya
hwesta sindarinwa
noun. Grey-elven hw
sindarinwa
grey-elven
hwesta
breeze, breath, puff of air
hwindë
eddy, whirlpool
hwindë noun (2) "eddy, whirlpool" (SWIN). In the pre-classical Tengwar system presupposed in the Etymologies, hwindë was also the name of tengwa #34, which letter Tolkien would later call hwesta sindarinwa instead.
hwesta
noun. breeze, breeze; [ᴹQ.] breath, puff of air
sindarinwa (þ) adj. "Grey-elven" in the phrase hwesta sindarinwa "Grey-elven hw" (Appendix E); it may really be "Sindarin" (as a noun) with the possessive ending -va, -wa appended, hence literally "hw of [the] Sindarin [language]"