flapper board
flapper board · flapper boards
A mechanical display board, used at railway stations etc., having the text characters…A mechanical display board, used at railway stations etc., having the text characters on individual flaps that can be rotated to form different messages.
Meaning
1 senses(historical)A mechanical display board, used at railway stations etc., having the text characters on individual flaps that can be rotated to form different messages.
Forms
plural: flapper boards| Singular | flapper board |
|---|---|
| Plural | flapper boards |
regular