to create upon the rear or outside of a paper or letter, as a direction, going, memorandum, or target.
To write your name, alone or with other terms, upon the rear of (a paper), for the true purpose of moving it, or even secure the repayment of a note, draft, or even the want; to make sure the payment, fulfillment, overall performance, or substance of, or to approve anything upon the rear of (a check, draft, writ, warrant of arrest, etc.).
To give one's title or help to; to sanction; to assist by approval; to accept.
to put anything on the straight back of; burden; load.
to publish one's name, or some brief remark, declaration, or memorandum, regarding the back of (a paper or document), as with assigning, or guaranteeing the repayment of, a note or bill of trade, or perhaps in briefing or docketing legal reports, invoices, etc.: as, the bill ended up being indorsed toward bank; he was shopping for a friend to indorse their note; a letter indorsed “London, 1868”: loosely utilized of writing added upon any element of a document.
To sanction; ratify; accept: because, to indorse a statement or even the views of some other.