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
traffic light
1. 交通信号, 信号
traffic light
1. n. A signalling device positioned at a road intersection or pedestrian crossing to indicate when it may be safe to drive, ride or walk, using a universal colour code.
2. n. (philately) The coloured dots on stamp sheet margins printed with offset litho or photogravure methods, used by the printers to check colour accuracy.
©