Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
falcārĭus, ii, m. [falx], a sickle- or scythe-maker: dico te priore nocte venisse inter falcarios, to scythe-makers’ street, Cic. Cat. 1, 4, 8; id. Sull. 18, 52.