פּוֹתֵחַ, (פָּתַח) opening, aperture; פ׳ טפח an aperture a hand-breadth wide. Ohol. III, 6 בפ׳ ט׳ the aperture required in the case is a hand-breadth wide. Ib. 7 יש בו פ׳ ט׳ ויש ביציאתו פ׳ ט׳ if it (the gutter) is a hand-breadth wide, and its outer end is of the same size &c. Ib. XIII, 2 שעורה בפ׳ ט׳ the standard measure is the width of &c.; a. fr.—Tosef. ib. X, 2, a. fr. פּוֹתִי טפח (fr. פָּתָה) width