1 general:: Phrase(s): put paid to something to consider something closed or completed; to mark or indicate that something is no longer important or pending. (As if one were stamping a bill "paid".) • At last, we were able to put paid to the matter of who is to manage the accounts.
McGrawhill's American Idioms And Phrasal Verbs
2 general:: Finish off, end, as in We'd best put paid to this issue. [Early 1900s]
American Heritage Idioms