roller bag; wheelie bag
A suitcase or bag with built-in wheels and a retractable handle, commonly used for travel. Wasei-eigo from 'caster bag'.
wasei-eigo (Japanese-coined English), from caster bag
A roller bag is convenient for travel.
You often see people pulling wheelie bags at the airport.
Variant spelling with a middle dot; less common in everyday use.
Wasei-eigo from English 'caster bag'. The term is not used in English; in Japanese it refers to a wheeled suitcase or bag.