Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
bĭ-mărītus, i, m. [bis], the husband of two wives (a word coined by Laterensis, the accuser of Plancius): bimaritum appellas, ut verba etiam fingas, Cic. Planc. 12, 30; and besides only in Hier. adv. Jovin. 1, n. 49.