Draw upon (3,4)
I believe the answer is:
dip into
(Other definitions for dip into that I've seen before include "Partake of, not finishing" , "Draw on" , "tap" , "Make use of (one's financial resources)" , "Take cursory interest in" .)
I believe the answer is:
dip into
(Other definitions for dip into that I've seen before include "Partake of, not finishing" , "Draw on" , "tap" , "Make use of (one's financial resources)" , "Take cursory interest in" .)