pillion seat; tandem seat
Wasei-eigo from 'tandem seat'; refers to the rear seat of a motorcycle or bicycle where a passenger rides behind the rider.
wasei-eigo (Japanese-coined English), from tandem seat
I rode with my girlfriend on the pillion seat of the motorcycle.
The pillion seat is narrow and gets tiring on long rides.
Variant with interpunct; less common but seen in some contexts.
Wasei-eigo from English 'tandem seat', referring to the passenger seat behind the rider on a motorcycle or bicycle.