The term 'EYE OR EAR' can be solved by the crossword solution 'SENSOR' (6 letters). The eye and ear are both sensory organs that detect and respond to stimuli from the environment. They are both equipped with specialized cells that convert physical energy into electrical signals that can be interpreted by the brain. The eye and ear are both examples of sensors, which are devices that detect and measure physical quantities such as light, sound, temperature, and pressure.