shag

名词 shag:

1. a strong coarse tobacco that has been shredded
2. a matted tangle of hair or fiber
3. a fabric with long coarse nap
4. slang for sexual intercourse
   同义词：fuck, fucking, screw, screwing, ass, nooky, nookie, piece of ass, piece of tail, roll in the hay, shtup
5. a lively dance step consisting of hopping on each foot in turn

动词 shag:

1. dance the shag

shag 5

v.Chiefly British Vulgar Slang （动词）【多用于英国的粗俗俚语】
shagged,shag.ging,shags
v.tr.（及物动词）
To engage in sexual intercourse with.
与...进行性交
v.intr.（不及物动词）
To engage in sexual intercourse.
与...进行性交

来源：
Perhaps from obsolete shag [to shake, wiggle]
Perhaps from obsolete shag [to shake, wiggle]