verb🔗ShareTo indicate; to convey or communicate by a signal."The crossing guard was signalling cars to stop so the children could safely cross the street. "communicationsignaltechnologyChat with AIVocabulary GamePractice Reading
verb🔗ShareTo communicate with (a person or system) by a signal."Seeing the flames, he ran to the control room and signalled headquarters."communicationsignaltechnologyChat with AIVocabulary GamePractice Reading
noun🔗ShareThe use of signals in communications, especially the sending of signals in telecommunications"The train's reliable signalling ensured a safe and timely arrival at the station. "communicationtechnologysignalelectronicsChat with AIVocabulary GamePractice Reading
noun🔗ShareThe signals and associated equipment required for their operation."The train's delay was due to maintenance work being done on the signalling along the track. "signaldevicetechnologysystemcommunicationmachinetechnicalChat with AIVocabulary GamePractice Reading
