| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| the offspring of a zebra and a donkey. |
| relay | |
| —n | |
| 1. | a person or team of people relieving others, as on a shift |
| 2. | a fresh team of horses, dogs, etc, posted at intervals along a route to relieve others |
| 3. | the act of relaying or process of being relayed |
| 4. | a. short for relay race |
| b. one of the sections of a relay race | |
| 5. | an automatic device that controls the setting of a valve, switch, etc, by means of an electric motor, solenoid, or pneumatic mechanism |
| 6. | electronics an electrical device in which a small change in current or voltage controls the switching on or off of circuits or other devices |
| 7. | radio |
| a. a combination of a receiver and transmitter designed to receive radio signals and retransmit them, in order to extend their range | |
| b. (as modifier): a relay station | |
| —vb | |
| 8. | to carry or spread (something, such as news or information) by relays |
| 9. | to supply or replace with relays |
| 10. | to retransmit (a signal) by means of a relay |
| 11. | (Brit) to broadcast (a performance) by sending out signals through a transmitting station: this concert is being relayed from the Albert Hall |
| [C15 relaien, from Old French relaier to leave behind, from | |
| relay (rē'lā) Pronunciation Key
An electrical switch that is operated by an electromagnet, such as a solenoid. When a small current passes through the electromagnet's coiled wire, it produces a magnetic field that attracts a movable iron bar, causing it to pivot and open or close the switch. |