Walk with an uneven gait (4)
I believe the answer is:
limp
'walk with an uneven gait' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for limp that I've seen before include "Walk with difficulty" , "Flabby - halt" , "Not stiff or firm" , "Walk with an uneven step" , "Walk with an injury" .)