Meaning

noun (architecture) a molding for a cornice; in profile it is shaped like an S (partly concave and partly convex)

originEtymology tree Proto-Indo-European *ḱewh₁- Proto-Indo-European *-mn̥ Proto-Indo-European *ḱúh₁mn̥ Proto-Hellenic *kūmə Ancient Greek κῦμᾰ (kûmă)bor. New Latin cȳmabor. English cyma From New Latin cȳma (“young sprout or shoot of cabbage”) (whence the botanic usage of cyme), from Ancient Greek κῦμα (kûma, “swell, wave”, “cyma”, “sprout of a plant”), from κύω (kúō, “to conceive, to become…

Etymology from Wiktionary, CC BY-SA 3.0