rollator
n.β Β«His sister-in-law commented that older people in Sweden sustain their stamina by walking behind a so-called rollator. Unlike a conventional “clomp and stomp” walker, a rollator glides over pavement, carpet, thresholds and grass on large rubber wheelsβmuch like a shopping cart with brakes, but without a big basket.Β» ββA New Rolling Walker To Get the Frail Moving Lacks Market Traction” by Thomas Petzinger Jr. in Pittsburgh, Pa. Wall Street Journal (B1) Oct. 2, 1998. (source: Double-Tongued Dictionary)