indorse

In heraldry, a bearing like the pale, but of one fourth its width.

To place something on the back of; burden; load.

To write one's name, or some brief remark, statement, or memorandum, on the back of (a paper or document), as in assigning, or guaranteeing the payment of, a note or bill of exchange, or in briefing or docketing legal papers, invoices, etc.

To sanction; ratify; approve.

In heraldry, to place back to back.