Exhausts (6)
'exhausts' is the definition.
('use up' can be a synonym of 'exhaust')
This is the entire clue.
(Other definitions for uses up that I've seen before include "Exhausts" , "'Depletes (4,2)'" , "Consumes" , "drains" .)
'exhausts' is the definition.
(draining is a kind of exhausting)
This is the entire clue.
(Other definitions for drains that I've seen before include "Pipes through which sewage is carried away" , "Exhausts" , "System carrying away rain water" , "Pipes to carry away liquid" , "Conduits for carrying away rainwater" .)