stroller UK /ˈstɹəʊlə/US /ˈstɹoʊlɚ/ noun4 •One who strolls. •(US, Australia) A seat or chair on wheels, pushed by somebody walking behind it, typically used for transporting babies and young children. •A vagrant.The mayor observed that it was great presumption in Wilson, who was a stroller, to proceed to such extremities with a gentleman of family and fortune; and threatened to commit him on the vagrant act. — 1771 •Men's semiformal daytime dress comprising a grey or black single- or double-breasted coat, grey striped or checked formal trousers, a grey or silver necktie, and a grey, black or buff waistcoat. formsstrollers