Definitions
1.NounA very large outdoor sign, generally used for advertising.
2.NounA flat surface, such as a panel or fence, on which bills are posted; a bulletin board.
3.NounA 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.
4.NounAn opening or closing portion of a program, often including credits and sponsors' names.
5.NounA sprite that always faces the screen, no matter which direction it is viewed from.
6.VerbTo advertise on a billboard."The upcoming concert was billboarded all over the city."