Put to use (5)
'put to use' is the definition.
(synonyms)
This is all the clue.
(Other definitions for apply that I've seen before include "Sue" , "Put to use" , "Ask (for job)" , "concentrate" , "Agree" .)
(Other definitions for harness that I've seen before include "Exploit (something's) potential energy" , "Gear for a horse" , "Supporting gear" , "Equine gear" , "Leather straps for a horse" .)
'put to use' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for applied that I've seen before include "Put into service, made work" , "having a practical character" , "Type of science" , "Administered" , "Put oneself forward, for a job say" .)
'put to use' is the definition.
(synonyms)
This is all the clue.
(Other definitions for utilize that I've seen before include "Appropriate" , "In use" .)