Is “Bushing” a Scrabble word?

1.A type of bearing, a cylindrical lining designed to reduce friction and wear inside a hole, often used as a casing for a shaft, pin or hinge.

2.An elastic bearing used as a type of vibration isolator, commonly made of rubber. An interface between two parts, damping the movement and the energy transmitted.

3.A threaded bushing, is a fastener element that is inserted into an object, usually to add a threaded hole in a softer or thin material.