Entry 1 sense Webster, 1913 Tricycle /trĭs'-ĭk-əl/ · Tri·cy·cle · IPA /ˈtɹaɪsɪkəl/ 01 n. A three-wheeled velocipede. See Illust. under Velocipede. Cf. Bicycle. 1. A three-wheeled velocipede. See Illust. under Velocipede. Cf. Bicycle. See: Velocipede, Bicycle