Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† hyoscyămus, i, m., = ὑοσκύαμος, the herb henbane, called also Apollinaris and altercum, Plin. 25, 4, 17, § 35; Cels. 5, 27, 14; Col. 6, 38, 3.
In a corrupted form: jusquiamus, i, m., Pall. 1, 35, 5; Veg. Vet. 2, 12, 5.