Here you will find one or more explanations in English for the word BIllboard.
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Billboard
Billboard Bill"board`, n.
1. (Naut.) 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.
Meaning of BIllboard from wikipedia