Pump say, working hose (4)
I believe the answer is:
shoe
'pump say' is the definition.
(I know that pump is a type of slip-on shoe)
'working hose' is the wordplay.
'working' indicates an anagram.
'hose' is an anagram of 'SHOE'.
(Other definitions for shoe that I've seen before include "Case from which playing cards are delt one at a time" , "Trainer, for instance" , "Oxford, for instance" , "Footwear - playing-card dispenser - part of a brake" , "Brogue, for example" .)