Accomplishment walkers discussed? (4)
I believe the answer is:
feat
'accomplishment' is the definition.
(feat is a kind of accomplishment)
'walkers discussed?' is the wordplay.
'walkers' becomes 'feet'.
'discussed?' shows a homophone (sound like) (I've seen 'discuss' mean this).
'feet' sounds like 'FEAT'.
(Other definitions for feat that I've seen before include "Notable act" , "Achievement needing skill, strength, etc." , "Great deed" , "Achievement needing great courage or skill" , "Exploit; achievement" .)