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He gave a signal to his driver to carry on.
At the prearranged signal, we all jumped up and shouted "Surprise!"
They waved a flag as a signal of distress.
She knew she was sending him mixed signals.
We waited for them to give us the signal to move.
They had ignored the strong signals of an approaching economic crisis .
In terms of their personal relationships, teachers have to be very careful not to send students the wrong signals.
The election was a signal for the party to rethink its strategies.
When she told him she was leaving, Bill wasn't surprised – he had read the signals.
I've called several times, but I keep getting a busy signal.
The copper wire carries the electrical signals.
The signal was green.
This is the American English definition of signal. View British English definition of signal.