Walk at a leisurely pace, missing street turn (4)
I believe the answer is:
roll
'turn' is the definition.
(roll is a kind of turn)
'walk at a leisurely pace missing street' is the wordplay.
'walk at a leisurely pace' becomes 'stroll' (to stroll is to walk slowly or casually).
'missing' is a deletion indicator.
'street' becomes 'st' (abbreviation).
'stroll' with 'st' taken away is 'ROLL'.
(Other definitions for roll that I've seen before include "Official register" , "Small round piece of bread" , "Drumming pattern" , "Official list of members" , "Barm cake" .)