the knee bones; the carpus of the knee, (same as 腕) the wrist
?【亥集上】【骨部】 康熙筆畫:18畫,部外筆畫:8畫
《篇海》烏貫切,音惋。膝?也。《唐書·孝友傳》張進昭截左?,廬于墓。