Delays on purpose (6)
I believe the answer is:
stalls
'delays on purpose' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for stalls that I've seen before include "Stops suddenly like engine out of fuel" , "Evasive moves" , "Plays for time" , "Most expensive theatre seats" , "Of engine, cuts out" .)