בּוּרְכָּא, (v. ברך) something hollow, absurdity; cmp. בּוֹר I. Keth. 63ᵇ; Ḥull. 88ᵇ; Shebu. 12ᵇ הא ב׳ this is entirely unfounded (or absurd). מאי בורכתיה (… תא) wherein does its absurdity (or hollowness) consist?—[בּוּרְכָּא knee, shoot, v. בִּרְכָּא.].