Pronunciation: /haɪ saɪn/
noun a signal or gesture indicating that something is to happen or is expected to happen
A1 She gave him a high sign to let him know it was safe to come out.
A2 The spy used a high sign to communicate with his partner across the room.
B1 The coach gave the team a high sign to start the play.
B2 The secret agent used a high sign to signal the start of the mission.
C1 The conductor gave a high sign to the musicians to begin playing.
C2 The politician subtly gave a high sign to his supporters during the speech.
formal The boss gave me a high sign to start the meeting.
informal I'll give you a high sign when it's time to leave the party.
slang She flashed me a high sign to let me know the coast was clear.
figurative His sudden departure was a high sign that something was wrong.
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