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smashboard

A pivoted board that could be operated to swing into position across the track, for use as a signal

Pronunciation: say smashboard

Meaning

A pivoted board that could be operated to swing into position across a railway track, used as a primitive signal.

Example

In the early days of rail travel, a smashboard was used as a primitive signal to control train movement.

In the early days of rail travel, a smashboard was used as a primitive signal to control train movement.

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