Sindarin 

laud

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.

Sindarin [PE23/142] Group: Eldamo. Published by

pess

noun. feather

Sindarin Group: Eldamo - neologism/reconstructions. Published by

Quenya 

quessë

feather

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)

quessë

noun. feather

The Quenya word for “feather” and the name of tengwa #4 [z] (LotR/1122).

Conceptual Development: Some similar words appeared in the Qenya Lexicon of the 1910s under the early root ᴱ√QASA: ᴱQ. qasil “arrow-feather, arrow” and ᴱQ. qasilla “tuft, nodding spray, tassel, plume” (QL/76); quasil was only glossed “arrow” in the contemporaneous Poetic and Mythological Words of Eldarissa (PME/76). ᴹQ. qesse “feather” first appeared in The Etymologies of the 1930s under the root ᴹ√KWES (Ety/KWES), already the name of tengwa #4 (EtyAC/KWES). It was also the name of this tengwa in notes on the Feanorian Alphabet from the 1930s and 1940s (PE22/22, 51, 61), and remained so into the published version of The Lord of the Rings.

Quenya [LotR/1122; PE17/123; PE17/168; WJ/417] Group: Eldamo. Published by

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 

pilen

noun. feather

A word for “feather” in the Declension of Nouns from the early 1930s (PE21/33-34), probably a later iteration of ᴱQ. pilin “feather” from the Qenya Lexicon of the 1910s (QL/74). The word ᴹQ. pilin was more frequently glossed “arrow”.

Qenya [PE21/33; PE21/34] Group: Eldamo. Published by

qesse

noun. feather

Qenya [Ety/KWES; EtyAC/KWES; PE22/022; PE22/051; PE22/061] Group: Eldamo. Published by

Middle Primitive Elvish

kwessē

noun. feather

Middle Primitive Elvish [Ety/KWES] Group: Eldamo. Published by