1. plural of signaller; people who send or receive signals, especially in military or railway communications
Usage: British spelling; American spelling is 'signalers'

Examples

• The army signallers maintained communication between the units.
• Railway signallers control train movements using electronic systems.
• Military signallers used flags and lights before radio technology.
• The signallers worked in shifts to ensure 24-hour coverage.
• Experienced signallers can interpret Morse code quickly.
• The signallers coordinated the safe passage of trains through the junction.