walker
US /ˈwɑː.kɚ/
UK /ˈwɑː.kɚ/

1.
a person who walks, especially for exercise or pleasure
:
•
She is an avid walker and enjoys hiking in the mountains.
•
The park is popular with dog walkers.
2.
a frame with wheels or rockers for a baby to sit in and move around in
:
•
The baby is learning to walk using a walker.
•
She put the toddler in the walker to keep him entertained.
3.
a frame used by a person with a disability or injury to help them walk
:
•
After the surgery, he needed a walker to move around.
•
The elderly woman relied on her walker for stability.