Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
luscĭnĭŏla, ae, f. dim. [luscinia], a little nightingale: aves cantrices, ut lusciniolae ac merulae, Varr. R. R. 3, 5, 14; cf. id. L. L. 5, § 76 Müll.
Prov.: So. Pol magis metuo mihi in monendo ne defuerit optio. Ba. Pol ego metuo lusciniolae ne defuerit cantio, of one who possesses a thing in superabundance, Plaut. Bacch. 1, 1, 4 Fleck.