Pace, measure (4)
I believe the answer is:
step
This clue is a double definition.
'pace' is the first definition.
(synonyms)
'measure' is the second definition.
(step is a kind of measure)
(Other definitions for step that I've seen before include "Dance move" , "Put foot on a pest" , "Second half of quick 20?" , "'Stage, rung (4)'" , "Measure taken" .)