Entry 1 sense Webster, 1913 Cavetto /(kȧ*vĕt"tō̇)/ · Ca·vet·to · IPA /kəˈvɛtəʊ/ 01 n. A concave molding; -- used chiefly in classical architecture. See Illust. of Column. 1. A concave molding; -- used chiefly in classical architecture. See Illust. of Column.(Arch.) See: Column