Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
gălērĭcŭlum, i, n. dim. [galerum], a small covering for the head, a cap, Mart. 14, 50 in lemm.; Front. S. 4, 7, 29.
A kind of peruke, Suet. Oth. 12; cf. galerum, II. A.