Wrench or gouge (4)
I believe the answer is:
tool
I believe this is a double definition.
'wrench' is the first definition.
(thesaurus)
'gouge' is the second definition.
(thesaurus)
(Other definitions for tool that I've seen before include "Device, implement" , "Cat's-paw; impress design on" , "Person exploited" , "one of 12 [SPADES] , for example" , "Device used for work" .)