Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
lāmella, ae, f. dim. [lamina], a small plate of metal, Vitr. 7, 3: paucae lamellae argenti, a few small silver coins, Sen. Vit. Beat. 21, 3; id. Brev. Vit. 12, 2: stella e lamella aerea, Paul. ex Fest. p. 351.