unbank

from The Century Dictionary.

• To take a bank from; open as if by leveling or removing banks.
• To cause (a fire) to burn briskly by raking off the ashes from the top, opening drafts and the ash-pit door, etc. See to bank a fire, under bank.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To remove a bank from; to open by, or as if by, the removal of a bank.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb transitive To remove a bank from; to open by, or as if by, the removal of a bank.