אַרְכּוּבָה f. (רכב) 1) the leg from under the hip-bone to the ankle, the knee and its surrounding parts (containing three sections each of which is called א׳ and defined by a different surname). Ḥull. IV, 6; v. ib. 76ᵃ (also רְכוּבָה); a. fr. —2) anything joined, joint. Kil. VII, 1 הא׳ שבגפן (Tosef. ib. IV, 11, Var. הבריכה שבסלע) that part of the vine which is bent down and laid in the ground to rise at another place. Y. Meg. I, 71ᶜ bot. א׳ של למ"ד the lower joint of the Lammed. Kel. XIV, 8 מפתח של א׳ וכ׳ (Tosef. Kel. B. Mets. IV, 15 רוֹכְבָּה … רְכוּבָתוֹ) a key with a joint, broken at the joint.—Pl. אַרְכּוּבוֹת. Nidd. 30ᵇ. B. Mets. 105ᵃ