כּוֹסֵילְתָּא, (כסל, v. כֶּסֶל; cmp. P. Sm. s. v. 1786, sq.; cmp. P. Sm. s. v. 1786, sq.)
כּוֹסֵילְתָּא, the space between the shoulders (interscapilium), shoulder-blade. Taan. 21ᵇ [read:] לבושא דיתיב ביה קרנא והוה בזיעא בי כ׳ (v. Var. in Rabb. D. S. a. l. note) a garment in which there was placed (fastened) a cup (for receiving the blood) which (garment) was cut in at the shoulder (so that the operator could let blood standing behind the female patient); [Ar. לבושא דאית ליה ביזעי ביזעי באפי כ׳ a garment in which there were several incisions to correspond to the shoulder-blade.]
כּוֹסֵילְתָּא, the lancet for blood-letting. ריבדא דכ׳ the puncture made by the lancet. Sabb. 129ᵃ עד דנפיק מר׳ דכ׳ until the puncture was healed up. Snh. 93ᵇ. Macc. 21ᵃ. Keth. 39ᵇ כי ר׳ דכ׳ as much pain as is caused by the puncture of the lancet. Nidd. 67ᵃ הני רבדי דכ׳ the marks of the punctures &c.