Found 2 items, similar to signboard.
English → English (WordNet) Definition: signboard signboard n : structure displaying a board on which advertisements can be posted; “the highway was lined with signboards” [syn: sign]
English → English (gcide) Definition: Signboard Signboard \Sign"board`\, n. 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. [1913 Webster]