Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sorbĭtĭo, ōnis, f. [sorbeo; a supping up, swallowing, drinking; hence, concr.], a drink, draught, potion, broth, etc. (mostly post-Aug.; not in Cic.), Cato, R. R. 157, 13; Plaut. Ps. 3, 2, 79; Col. 6, 10, 1; Cels. 2, 30; Plin. 20, 16, 62, § 170; 24, 19, 120, § 188; Phaedr. 1, 26, 5; Sen. Ep. 78, 25: sorbitio quem tollit dira cicutae, i. e. Socrates, Pers. 4, 2.