Leave baffled (5)
I believe the answer is:
stump
'leave baffled' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stump that I've seen before include "A single wicket" , "Wicket part - dumbfound" , "Part of a felled tree that's left in the ground" , "Residue after felling" , "foil" .)