An adjective in the Gnomish Lexicon of the 1910s glossed “bent and thin”, also serving as a noun “crescent” (GL/27), perhaps based on the early root ᴱ√KṚKṚ (QL/48).
Gnomish
thin-
verb. to skim
thinta-
verb. to skim
crinc
noun/adjective. bent and thin; crescent
glen(n)
adjective. thin, fine, slender
An adjective appearing as glen “slender” in the Gnomish Grammar of the 1910s (GG/11). In the contemporaneous Gnomish Lexicon it appeared as G. {glen >>} glenn “thin, fine” and was related to G. lenc and ᴱQ. léni (GL/39). It was thus derived from the early root ᴱ√LENE “long” as suggested by Christopher Tolkien (QL/53; LT2A/Glend).
mathwen
noun. evening
musc
adjective. grey
A word appearing as G. thin- “skim” in the Gnomish Lexicon of the 1910s along with a variant thinta-, both clearly related to the noun G. thim “milk, after separation” (GL/71-72).
Neo-Sindarin: These 1910s verbs conflict with the later root √THIN “grey” and the verb [N.] thinna- “fade” from ON. thintha-. As such, I adapt this verb as ᴺS. thiv- “to skim” based on a Neo-Root ᴺ√THIM which I used to justify the retention of ᴺS. thim for “milk”.