[biàn zi]
（小辫） plait; braid; queue; pigtail
wear one's hair in braids; plait the hair
梳辫子
sort and classify the problems
把问题梳梳辫子
（把柄） a mistake or shortcoming that may be exploited by an opponent; handle
seize on sb.'s mistake or shortcoming; capitalize on sb.'s vulnerable point
揪辫子