楚ㄔㄨˇchǔ河ㄏㄜˊhé漢ㄏㄢˋhàn界ㄐㄧㄝˋjiè

  1. 楚漢紛爭時，以鴻溝為界。比喻敵對的兩方。

  2. 象棋棋盤的中界。

英lit. the river that divides Chu and Han, fig. a line that divides rival territories, the mid-line between sides on a Chinese chessboard