Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
lōtĭum, ĭi, n., urine: brassica alvum bonam facit lotiumque, Cato, R. R. 156; Suet. Vesp. 23.
Prov.: non valet lotium suum, of a good-for-nothing fellow, Petr. 57, 3.