flapper board

Fetched 2026-10-26 (cache).

Synonyms: clapper board, clapperboard

Antonyms: clapper board, clapperboard

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|historical}} A [[mechanical]] [[display]] [[board]], used at [[railway station]]s etc., having the [[text]] [[character]]s on [[individual]] [[flap]]s that can be rotated to form different messages.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.