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src: wikipedia
- Definition
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- billboard :
A very large outdoor sign, generally used for advertising.
- billboard :
A flat surface, such as a panel or fence, on which bills are posted; a bulletin board.
- billboard :
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.<ref>Benjamin J. Totten, Naval Text-Book, Boston: Little and Brown, 1841, p.290, “B<small>ILL</small>-B<small>OARDS</small>.”<sup>[https://catalog.hathitrust.org/Record/008602848]</sup></ref>
- billboard :
An opening or closing portion of a program, often including credits and sponsors' names.