תבש"ט, a mnemonical sign for תָּ֗דִיר (constant, daily), חוֹבָֹה (obligatory), שַֹׁבָּת (suspending the Sabbath), and ט̇וּמְאָה (disregard of levitical uncleanness). Men. 51ᵃ (Ms. M. written out in full, v. Rabb. D. S. a. l. note; Ar. תבט"ש, v. Rashi); Yalk. Lev. 486 תכשיט (corr. acc.).