Begin to use up (resources) (3,4)
I believe the answer is:
eat into
(Other definitions for eat into that I've seen before include "Corrode (something)" , "Consume (resources)" , "run down" , "start wearing out" , "Etch" .)
I believe the answer is:
eat into
(Other definitions for eat into that I've seen before include "Corrode (something)" , "Consume (resources)" , "run down" , "start wearing out" , "Etch" .)