Noun

1. Bending the head or body or knee as a sign of reverence or submission or shame or greeting
2. Managing the bow in playing a stringed instrument

Verb

1. Bend one's knee or body, or lower one's head
2. Yield to another's wish or opinion
3. Bend the head or the upper part of the body in a gesture of respect or greeting
4. Bend one's back forward from the waist on down
5. Play on a string instrument with a bow