n.(摩托车等的)后座
As a learner rider you must not carry a pillion passenger.
作为摩托车初学者,切勿后座载人。
She rode pillion on her son's motor bike.
她坐在儿子摩托车的后座上。
He drove his motorbike, with me riding pillion.
他开摩托车, 我坐在后座上.