Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hŏmuncĭo, ōnis, m. dim. [homo], a little man, manikin: ego homuncio hoc non facerem? Ter. Eun. 3, 5, 42: homuncio hic, qui multa putat praeter virtutem homini cara esse (opp. deus), Cic. Ac. 2, 43, 134: (Augustus Horatium) inter alios jocos homuncionem lepidissimum appellat, Suet. Vit. Hor.; Sen. Ep. 116, 6: quadringenta tibi si quis deus aut similis dis homuncio, Juv. 5, 133.