Sputo, sputas, sputâre, Frequentatiuum. Plaur. To spet often: to beray with spettle.
Sputum, sputi, n. g. Martial. Spettle.Minuta sputa. Lucret. Tenuia, Lucret. Salsa Lucret. Edere sputum. Cels.
Lewis and Short: Latin dictionary
spŭo, ui, ūtum, 3, v. n. and a. [Sanscr. shtiv.; Gr. ptu/w; Germ. speien; Engl. spit], to spit, to spit out, spew (very rare; not in Cic.). I.Neutr.: Antoniam Drusi non spuisse percelebre est, Sol. 1, 74: ex toto spuere desisse, Cels. 2, 8, 77: in faciem alicujus, Vulg. Num. 12, 14.—Esp., as a charm against fascination, etc. (cf. conspuo, I. fin.): veniam a deis petimus spuendo in sinum, Plin. 28, 4, 7, 35; cf.: qui sputatur morbus, Plaut. Capt. 3, 4, 18 sqq. Brix ad loc.; Schol. Juv. 7, 112 Mayor ad loc.—II.Act.: sicco terram (i. e. pulverem) spuit ore viator Aridus, Verg. G. 4, 97.—Hence, spūtum, i, n. (acc. to II.). A.Lit., spit, spittle; sing., Cels. 2, 8 med.; Plin. 28, 4, 7, 38; plur., Lucr. 6, 1188; Prop. 4 (5), 5, 66; Mart. 2, 26, 2; Petr. 131, 4; Sen. Const. 1, 3.—B.Transf., of a light, thin plate, Mart. 8, 33, 11.
spūto, āre, v. freq. a. [spuo], to spit, spit out (mostly ante-class.): sanguinem, Plaut. Merc. 1, 2, 30: morbus, qui sputatur, that disease before which one spits, i. e. the epilepsy, id. Capt. 3, 4, 18 (cf. Plin. 10, 23, 33, 69; 28, 4, 7, 35): mixtos sputantem sanguine dentes, Ov. M. 12, 256.