| signal | |
| 1. n. That which conveys information; an entity of some kind used to represent something. | |
| 2. n. A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action. | |
| 3. n. An on-off light, semaphore, or other device used to give an indication to another person. | |
| 4. n. (of a radio, TV, telephone, internet, etc.) An electrical or electromagnetic action, normally a voltage that is a function of time that conveys the information of the radio or TV program or of communi | |
| My mobile phone can't get a signal in the railway station. | |
| 5. n. A token; an indication; a foreshadowing; a sign. | |
| 6. n. Useful information, as opposed to noise. | |
| 7. n. (computing, Unix) A simple interprocess communication used to notify a process or thread of an occurrence. | |
| 8. n. (biochemistry) A signalling interaction between cells | |
| 9. v. To indicate; to convey or communicate by a signal. | |
| I signalled my acquiescence with a nod. | |
| 10. v. To communicate with (a person or system) by a signal. | |
| Seeing the flames, he ran to the control room and signalled headquarters. | |
| 11. adj. Standing above others in rank, importance, or achievement. | |
| a signal exploit; a signal service; a signal act of benevolence | |
