ארובה

אֲרוּבָּהf. (b. h. אֲרֻבָּה, ארב) opening, whence 1) an aperture in the roof looking to the ground floor (answering to the Greek hypaithron, Roman compluvium), contrad. fr. חַלֹּון a garret window in the wall projecting above the flat roof. Bets.V, 1 (35b); cmp. Rashi a. l. Nidd.20b כסומא בא׳ like a blind man finding his way down from the ărubbah, i. e. hitting the truth by chance. Ohol. X, 1; a. fr.Pl. אֲרוּבֹּות. Ib. 4 sq.; a. e. 2) the opening panel of folding doors.Pl. as supra. Yoma 76a. Sabb.43a; 153b; Kel. XV, 2 read with Ar. אֲרוּכֹות.