A word for “alder” [a type of birch tree] in the Gnomish Lexicon of the 1910s, apparently based on G. cwîl “quiet” (GL/28).
Gnomish
cwil
noun. hue, tint
cwildred
noun. bat (animal)
cwiliog
adjective. bright-hued
cwîl
adjective. quiet, peaceful, gentle
cwileg
noun. alder
cwilon
adjective. bright-hued
A word appearing as G. cwildred “bat (animal)” in the Gnomish Lexicon of the 1910s, an (agental?) elaboration of G. cwîl “quiet” (GL/28). According to the editors, the first d was circled, perhaps indicating it was optional or lost (cwilred).
Neo-Sindarin: For purposes of Neo-Sindarin, I would revise this word to ᴺS. pillor as an agental form of the Neo-Root ᴺ√KWILID.