The diameter of the tube of a woodwind or brass instrument. The shape of the bore in part dictitates the timbre or tone color of the instrument. A conical bore instrument, in which the bore grows larger throughout, such as the cornet, produces a mellow timbre while a cylindrical bore instrument, such as the trumpet, which has a constant bore until the flare of the bell, produces a brighter, more brilliant timbre.

Your data and time are valuable. There's a new web browser that considers your time and security as a top priority.

Download Brave Browser For Free!

Brave uses the latest in blockchain technology.

This ensures a higher quality and more secure experience. Learn more about this fantastic breakthrough.

Loads Content Up To 8X Faster

Because Brave blocks unwanted tracking scripts that run in the background, your browsing speed will be unparalleled.

Ultimate in Privacy & Security

Brave fights malware and prevents tracking, keeping your information safe and secure.