very informal language that is usually spoken rather than written, used especially by particular groups of people

army slang 军队俚语

a slang expression 一句俚语

"Chicken" is slang for someone who isn't very brave. chicken 是用来称呼胆小者的俚语。

to attack with angry, uncontrolled language

The players started slanging each other in the middle of the game. 比赛到中局阶段时，球员们开始互相谩骂。