Thumbs-up (noun)

1. A gesture made by holding the hand in a fist and extending the thumb upward, indicating agreement or approval.
2. An expression of support or encouragement.
3. A signal of agreement or acceptance.

Origin:

A gesture where the thumb is pointed upward, meaning approval or agreement.

Examples:

1. He gave me a thumbs-up to show his approval.
2. The boss gave us the thumbs-up to proceed with the project.
3. The crowd gave the team a thumbs-up as they left the field.
4. He gave me a thumbs-up for my idea.
5. She gave the thumbs-up for the proposal.