Walking support (6)
I believe the answer is:
crutch
'walking support' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for crutch that I've seen before include "Support for one with injured leg" , "Staff used as an aid to walking" , "Walking support, fits under arm" , "Staff used by lame person" , "Support for those with difficulty in walking" .)