ㄖㄢˇrǎnˇzhǐㄔㄨㄟˊchuíㄒㄧㄢˊxián

  1. 比喻非分利益元史·五七·經傳》:持兩端觀望莫不覬覦神器染指垂涎。」

lit. dirty finger, mouth watering (idiom)​; fig. greedy to seize sth