a person who walks, especially for exercise or enjoyment
She's a very fast/slow walker.她走起路来非常快／慢。
They've been keen walkers ever since they read about the benefits of exercise.自从他们读到锻炼的好处之后就一直热衷于步行锻炼。
(alsobaby walker)（帮助小孩子学走路用的）学步车
a seat on wheels that a baby can sit in and use its feet to move along, before it is able to walk
US(UKZimmer frame)（老年人等用的）助行架
a metal frame with four legs that you place in front of you and lean on to help you move forward if you have difficulty in walking, for example when old