Signal¹ 1. a gesture, action, or sound that is used to convey information or instructions, typically by prearrangement between the parties concerned. 2. an event or statement that provides the impulse for an occurrence.
Signal¹ 1. a gesture, action, or sound that is used to convey information or instructions, typically by prearrangement between the parties concerned. 2. an event or statement that provides the impulse for an occurrence.