Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
porcellus, i, m. dim. [porculus], a little pig, Varr. R. R. 2, 4, 14; Suet. Ner. 33; Plin. 30, 6, 16, § 47.
Plur., the litter of a wild sow, Phaedr. 2, 4, 15.