Jastrow: כֶּרַע

כֶּרַע c. (b. h.; [hollow, cmp. בֶּרֶךְ,] knee, leg. Zeb. VIII, 5 כַּרְעוֹ של וכ׳ the leg of one of them (Talm. ed. 77ᵇ כרעים du.). Kel. XVIII, 7 כ׳ שהיתה וכ׳ a knee-shaped piece of wood which became unclean … and which one fastened to a bedstead; Tosef. Kel. B. Mets. IX, 3. Ib. VIII, 8 כ׳ שפרש וכ׳ a leg of a bedstead which was taken off with the longside &c.; a. e.—Du. כְּרָעַיִם, כְּרָעַיִים; pl. כְּרָעִים, כְּרָעִין. Tam. IV, 2. Zeb. VIII, 5. Succ. 15ᵇ, v. אֲרוּכָה. Cant. R. to VII, 3 מה כרס … והכ׳ וכ׳ as the belly is bounded by the heart (chest) on the one, and the legs on the other. Kel. XVIII, 5; Tosef. Kel. B. Mets. VIII, 5; a. fr.