Lewis & Short

ūrīnālis, e, adj. [urina], of or belonging to urine, urinary, urinative: viae, Cael. Aur. Tard. 5, 3; cf. fistula, Veg. 3, 15: virtutes, Cael. Aur. Tard. 5, 2: medicamenta, id. ib. 1, 4; 5, 1.