Meaning : Any incitement to action.
Example :
He awaited the signal to start.
The victory was a signal for wild celebration.
Meaning : An electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes.
Meaning : Notably out of the ordinary.
Example :
The year saw one signal triumph for the Labour party.
Signal ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Signal ka matlab kya hota hai?