Pauses to bury revolutionary Slav (9)
I believe the answer is:
intervals
'pauses' is the definition.
(interval can mean a pause or break)
'bury revolutionary slav' is the wordplay.
'bury' becomes 'inter' (to inter is to put into the ground).
'revolutionary' says the letters should be written in reverse.
'slav' backwards is 'vals'.
'inter'+'vals'='INTERVALS'
'to' acts as a link.
(Other definitions for intervals that I've seen before include "Intermissions" , "Times between acts" , "Net's viral (anag.)" , "Rests" , "Periods of time between parts of a play" .)