Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cănālĭcŭlus, i, m. (cănālĭcŭla, ae, f. (ante- and post-class.), Varr. R. R. 3, 5, 14; Lucil. ap. Non. p. 198, 7; Gell. 17, 11, 2; cf. canalis), dim. [canalis], a small channel, pipe, or gutter.