Lewis Short
jŏcor, ātus, 1
* V. dep. n. and a. [jocus], to jest, joke (class.): tu hanc jocari credis? faciet, nisi caveo,Ter. Heaut. 4, 4, 7: duplex jocandi genus,Cic. Off. 1, 29, 104; cf.: voluit Fortuna jocari,Juv. 3, 40.
* In partic., to say in jest: haec jocatus sum,Cic. Fam. 9, 14, 4: in aliquid permulta,Hor. S. 1, 5, 62: multum de aliqua re,Sen. Suas. 1, 6; Cat. 2, 6: obscaena,Ov. Tr. 2, 497; Quint. 5, 13, 46.—Act. collat. form jŏco, āre: quasi jocabo,Plaut. Cas. 4, 4, 20 (al. jocabor).
Charlton T. Lewis, Charles Short, A Latin Dictionary