ᴺS. [G.] cim n. “blade” (Category: Blade, Share)
Neo-Sindarin: The root √KIM “edge, brink of” appeared in Tolkien’s writing of the 1960s, with derivatives like Q. címa “edge of a cutting weapon/tool” (PE22/149). Therefore, I think this Gnomish noun might be retained for purposes of Neo-Sindarin as ᴺS. cim “blade”, perhaps derived from primitive *kimbē. I would also assume this Neo-Sindarin word was not archaic.
References ✧ GL/26
|gim||soft-mutation; g-mutation||✧ GL/26|