Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pŭellus, i, m. dim. [contr. from puerulus, from puer], a little boy (ante-class.): formosus puellus, Lucil. ap. Non. 158, 18; Enn. ib. 158, 20 (Ann. v. 278 Vahl.); Varr. ib. 158, 15; 23; 24; Plaut. ap. Fest. p. 249 Müll.; Lucr. 4, 1252; Poët. ap. Gell. 19, 11, 4; cf. Suet. Calig. 8; App. M. 7, p. 197, 10.