1. a person who signals with flags, especially to direct traffic or control the movement of trains

Examples

• The flagman stopped traffic to allow the construction crew to work safely.
• A flagman stood at the railroad crossing to warn drivers of the approaching train.
• The highway flagman waved his orange flag to direct cars into the single lane.
• Construction zones often require a flagman to control the flow of vehicles.
• The flagman’s bright vest made him visible to drivers from a distance.
• Railroad companies employ flagmen to ensure safe passage at crossings.