a. [ Gr. &unr_; wing + &unr_;, &unr_;, ear. ] (Anat.) Of or pertaining to, or designating, a bone between the prootic and epiotic in the dorsal and outer part of the periotic capsule of many fishes. --
☞ The pterotic bone is so called because fancied in some cases to resemble in form a bird's wing [ 1913 Webster ]
n. An amorous composition or poem. [ 1913 Webster ]
n. Erotic quality. [ 1913 Webster ]