quessë noun "feather", also name of tengwa #4 (Appendix E, WJ:417, KWES, VT45:24); súriquessë "wind feather" (referring to a "tuft of radiating grass" in a drawing by Tolkien) (J.R.R. Tolkien: Artist & Illustrator, p. 197)
Sindarin
laud
noun. feather
pess
noun. feather
A Sindarin word for “feather”, attested only its suffixal form -lod in the name gwaelod “wind feather” (PE23/142). It is derived from ✶lauto, so its Sindarin singular form would be ✱laud.