go-cart

(noun) an enclosing framework on casters or wheels; helps babies learn to walk. Synonyms: walker, baby-walker.

(noun) wheeled vehicle that can be pushed by a person; may have one or two or four wheels. Synonyms: handcart, pushcart, cart. Examples: "He used a handcart to carry the rocks away." "Their pushcart was piled high with groceries."

(noun) a small vehicle with four wheels in which a baby or child is pushed around. Synonyms: baby buggy, baby carriage, carriage, perambulator, pram, stroller, pushchair, pusher.