Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
lăguncŭla, ae, f. dim. [lagena], a small flask, small bottle, Col. 12, 38, 6; 8; Plin. Ep. 2, 6, 2; 1, 6, 3: novae, Vulg. Job, 32, 19; id. Jer. 13, 12; 48, 12.