What is "blank indorsement"

Indorsement \In*dorse"ment\, n. [From Indorse; cf. Endorsement.] [Written also endorsement.]

1. The act of writing on the back of a note, bill, or other written instrument.

2. That which is written on the back of a note, bill, or other paper, as a name, an order for, or a receipt of, payment, or the return of an officer, etc.; a writing, usually upon the back, but sometimes on the face, of a negotiable instrument, by which the property therein is assigned and transferred.
   --Story. Byles. Burrill.

3. Sanction, support, or approval; as, the indorsement of a rumor, an opinion, a course, conduct.

   Blank indorsement. See under Blank.

Blank \Blank\, a. [OE. blank, blonc, blaunc, blaunche, fr. F. blanc, fem. blanche, fr. OHG. blanch shining, bright, white, G. blank; akin to E. blink, cf. also AS. blanc white. ?98. See Blink, and cf. 1st Blanch.]

1. Of a white or pale color; without color.

   To the blank moon Her office they prescribed.
   --Milton.

2. Free from writing, printing, or marks; having an empty space to be filled in with some special writing; -- said of checks, official documents, etc.; as, blank paper; a blank check; a blank ballot.

3. Utterly confounded or discomfited.

   Adam . . . astonied stood, and blank.
   --Milton.

4. Empty; void; without result; fruitless; as, a blank space; a blank day.

5. Lacking characteristics which give variety; as, a blank desert; a blank wall; destitute of interests, affections, hopes, etc.; as, to live a blank existence; destitute of sensations; as, blank unconsciousness.

6. Lacking animation and intelligence, or their associated characteristics, as expression of face, look, etc.; expressionless; vacant. ``Blank and horror-stricken faces.''
   --C. Kingsley.

   The blank . . . glance of a half returned consciousness.
   --G. Eliot.

7. Absolute; downright; unmixed; as, blank terror.

   Blank bar (Law), a plea put in to oblige the plaintiff in an action of trespass to assign the certain place where the trespass was committed; -- called also common bar.

   Blank cartridge, a cartridge containing no ball.

   Blank deed. See Deed.

   Blank door, or Blank window (Arch.), a depression in a wall of the size of a door or window, either for symmetrical effect, or for the more convenient insertion of a door or window at a future time, should it be needed.

   Blank indorsement (Law), an indorsement which omits the name of the person in whose favor it is made; it is usually made by simply writing the name of the indorser on the back of the bill.

   Blank line (Print.), a vacant space of the breadth of a line, on a printed page; a line of quadrats.

   Blank tire (Mech.), a tire without a flange.

   Blank tooling. See Blind tooling, under Blind.

   Blank verse. See under Verse.

   Blank wall, a wall in which there is no opening; a dead wall.