any clever maneuver | any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner |
an instrumentality invented for a particular purpose | electronic equipment that detects the presence of radio signals or radioactivity |
an emblematic design (especially in heraldry) | rectifier that extracts modulation from a radio carrier wave |
any ornamental pattern or design (as in embroidery) | |
something in an artistic work designed to achieve a particular effect | |