Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
jŏcātĭo, ōnis, f. [jocor], a joking, joke (class.): nunc venio ad jocationes tuas, Cic. Fam. 9, 16, 7; id. Att. 2, 8, 1; Auct. Her. 3, 14, 25.