Meaning of the word "raise one's hand" in English

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

raise one's hand

US /reɪz wʌnz hænd/
UK /reɪz wʌnz hænd/
"raise one's hand" picture

Idiom

to lift one's hand to get attention, to volunteer, or to vote

Example:
If you know the answer, please raise your hand.
The teacher asked the students to raise their hands before speaking.