Meaning of the word "raise hand" in English

What does "raise hand" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

raise hand

US /reɪz hænd/
UK /reɪz hænd/

Phrase

to lift one's hand to indicate that one has a question, wants to speak, or agrees with something

Example:
If you know the answer, please raise your hand.
The teacher asked the students to raise their hands if they had any questions.