stroller
noun
[ ˈstrəʊlə ]
• a person taking a leisurely walk.
• "shady gardens where strollers could relax"
• a chair on wheels, typically folding, in which a baby or young child can be pushed along; a pushchair.
• a young urban vagrant; a street child.
• "a little stroller taps on the window and cups his hands in a begging gesture"