א׳, as numeral letter, one, as אות א׳ = אות אחת one letter. Sabb. 104ᵃ; a. fr. [Editions and Mss. vary, according to space, between the full numeral and the numeral letter, א׳ for אחד, אחת; ב׳ for שנים, שתים, שתי &c.]