signboard

A board bearing a sign.

A board on which a notice is fixed, as of one’s place of business, of goods for sale, or of warning against trespass.

A board, placed on or before a shop, office, etc., on which ssome notice is given, as the name of a firm, of a business, or the like.

A board carrying a sign, or on which signs may be posted.

structure displaying a board on which advertisements can be posted