Billboard
Billboard ({not transcribed}) , noun
1.
(Nautical) A piece of thick plank, armed with iron plates, and fixed on the bow or fore channels of a vessel, for the bill or fluke of the anchor to rest on. — Totten
2.
A flat surface, as of a panel or of a fence, on which bills are posted; a bulletin board.
A large board out of doors and visible to passers-by, on which the space is rented for advertising purposes; also, the advertising displayed on such a board.