[chǐ]
[量]
（长度单位， 一市尺合1/3米） chi, a unit of length (=1/3 metre)
let saliva run down from the mouth as long as three chi -- cannot hide one's greed
垂涎三尺
[名]
（量长度的器具） rule; ruler
T-square
丁字尺
folding rule
折尺
（像尺的东西） an instrument in the shape of a ruler
slide rule
计算尺
bronze paperweight
镇尺