Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* vectārĭus, a, um, adj. [vecto], of or for carrying or conveying: equus, a packhorse, draught-horse, Varr R. R. 2, 7, 15 (acc. to Schneid. we should read vectuarius).