verb Download 🔗Share To indicate; to convey or communicate by a signal. Examples : "The teacher signalled the start of the test by raising her hand. " communication signal sign Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To communicate with (a person or system) by a signal. Examples : "Seeing the flames, he ran to the control room and signalled headquarters." communication signal technology Chat with AIVocabulary GamePractice Reading