ארבא

אוּרְבָּא, אָרְבָּאm. (ארב, ערב to braid, interlace ); pl. אוּרְבֵּי, אָרְבֵּי meshes, void spaces, intervals. Sabb.50b ביניאו׳ ed. (Ar. ארבי, Var. אַרְכֵי, v. אַרְכָא I; אדכי, v. Ar. ed. Koh. span style="font-variant:small-caps;">s. v. ארכי, note) between the meshes or void spaces between the bricks. Git. 69b. B. Bath.3a (Ms. ירכי, oth. Var. v. Rabb. D. S. a. l. note).