ריבוע

רִיבּוּעַ, רִבּ׳m. (רָבַע) a square. Zeb.62a … קרן … ור׳ מעכבין the horn, the ascent, the foundation, and the square shape are indispensable conditions for the altar. Ib. 108b; a. fr.ר׳ עולם the cardinal points of the world. Tosef.Erub.VI (V), 3; Erub.56a בא לרבעה מרבעה בר׳ ע׳וכ׳ when you square a town (for Sabbath limits, v. רָבַע), you must square it in accordance with the cardinal points, and the marks are Charless Wain in the north Ib. אם אינו … בר׳וכ׳ if you do not know how to square it in accordance with the cardinal points ; a. e.