1. a small vehicle with four wheels in which a baby or child is pushed around

Synonym: baby buggybaby carriagecarriageperambulatorpramstrollerpushchairpusher

2. wheeled vehicle that can be pushed by a person
may have one or two or four wheels

e.g. he used a handcart to carry the rocks away
their pushcart was piled high with groceries

Synonym: handcartpushcartcart

3. an enclosing framework on casters or wheels
helps babies learn to walk

Synonym: walkerbaby-walker