BOW

noun

1. A weapon made of a curved piece of wood or other flexible material whose ends are connected by a string, used for shooting arrows.
2. A curved bend in a rod or planar surface, or in a linear formation such as a river (see oxbow).
3. A rod with horsehair (or an artificial substitute) stretched between the ends, used for playing various stringed musical instruments.

verb

1. To play music on (a stringed) instrument using a bow.
2. To become bent or curved.
3. To make something bend or curve.