1 especially British EnglishDLO
someone who walks for pleasure or exercise [↪ hiker]:
The area is popular with walkers.
climbers and hill-walkers
someone who walks fast, slowly etc
3MH especially American English
a metal frame on wheels that old or sick people use to help them walk [= zimmer frame British English]
a frame on wheels that a baby can sit in and move around using its legs, before it can walk [= baby walker British English]