Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
causĭdĭcīna, ae, f. [causidicus], the office of advocate (post-class.): id habet causidicina cum ceteris metuendum, quod, etc., Amm. 30, 4, 22; Symm. Ep. 5, 75; Cod. Th. 8, 4, 30 al.