Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hircōsus, a, um, adj. [hircus], that smells like a goat, goatish: senex, Plaut. Merc. 3, 3, 14: gens centurionum, Pers. 3, 77: subulcus, Mart. 10, 98, 10; cf.: licet scripti sint inter hircosos, possint tamen inter unguentatos placere, Sen. Fragm. ap. Gell. 12, 2, 11; Mart. 12, 59, 5.