An adjective in The Etymologies of the 1930s glossed “ bowed, bow-shaped, bent” derived from primitive ᴹ✶kuʒnā under the root ᴹ√KUƷ “bow” (Ety/KUƷ).
Conceptual Development: G. cûn “bowed, bent, concave” appeared in the Gnomish Lexicon of the 1910s, along with variant forms cunwed, cuvon (GL/27).
Primitive form given as kuȜnâ, derived from KUȜ "bow" (LR:365); it is probable that ku3nâ was originally an adjective "bow-shaped", since -nâ is predominantly an adjectival ending. As for Ȝ (spirant g) becoming a plosive g, compare garma.