Sink — creator (7)
I believe the answer is:
founder
I believe this is a double definition.
'sink' is the first definition.
(I know that sink is a more specific form of the action founder)
'creator' is the second definition.
(I know that founder subproperty of creator)
(Other definitions for founder that I've seen before include "Sink like originator?" , "Creator" , "One who establishes an institution" , "One sets up firm" , "Sink, come to grief" .)