unbank

verb3

1. •
   To remove a bank (slope) or barrier from; to open by, or as if by, the removal of a bank.

   • We may forget them, ay forget the world, Its cares, its kingdoms, and unbank the hours — 1842
2. •
   Synonym of debank

   • We must..use a bank to unbank the banks, to the extent that may be necessary. — 1834
3. •
   To make (a fire) burn up by raking off the ashes from the top, opening draughts, etc.