A noun for “spider” in the Gnomish Lexicon of the 1910s with variants cing and cingwin (GL/26). Tolkien indicated this word was related to G. cang “tangled” (GL/25), which was probably based on the early root ᴱ√KAŊA “weave, twine” (QL/45, 98). The i in cing indicates the primitive form was probably kŋ̣g-, since short syllabic nasals became in in Gnomish.
Gnomish
ling
noun. small snake
ing
noun. fish
lingos
noun. snake
ging
noun. spider
-lim
suffix. many
cing(win)
noun. spider
fenlug
noun. snake
fent
noun. snake
gerd(h)olm
noun. mine
gersauth
noun. mine
gersoth
noun. mine
grûda
noun. cave
gung
noun. spider
gwaidhin
noun. web
gwidh-a-ging
noun. cobweb
lim
adjective. many
lûg
noun. snake
ungwi
noun. spider
A word for a “small snake” in the Gnomish Lexicon of the 1910s, along a longer form G. lingos “snake” (GL/54), clearly a cognate of ᴱQ. lin (ling-) “snake” from the contemporaneous Qenya Lexicon (QL/54).