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to give someone a message, instruction, etc. by making a sound or movement
to indicate something as a sign for something else
to do something to make one's feelings or opinions known
a series of electrical or radio waves carrying data to a radio, television station, or mobile phone
What is "signal"?
A signal refers to a series of electromagnetic waves used to carry data from one device to another, such as from a radio station to a receiver, or from a mobile phone to a cell tower. These signals can carry various types of information, such as voice, music, or video, and are transmitted through the air or via cables. The quality of a signal affects how well the data is received and understood, with stronger signals providing clearer communication.
a gesture or action used to convey a message without using words
any stimulus, warning, or indication that encourages or triggers a specific action
unusually important, remarkable, or outstanding in quality or effect
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