Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Perseus.
ămīcŭla, v. amiculus.
ămīcŭlus, i, m. dim. [amicus], a dear friend: quid de Docimo amiculo meo? * Cic. Verr. 2, 3, 34: te nil miseret, dure, tui dulcis amiculi? Cat. 30, 2; * Hor. Ep. 1, 17, 3.
Hence, ămīcŭla, ae, f., a dear (female) friend: de amiculà rixatus, * Cic. de Or. 2, 59, 244; so Plin. Ep. 3, 9, 13; Suet. Calig. 33.