noun
1. : a valve in which a ball fits into a spherical seat and regulates the aperture by its rise and fall due to fluid pressure, to a spring, or to its own weight
2. : ball cock
noun
1. : a valve in which a ball fits into a spherical seat and regulates the aperture by its rise and fall due to fluid pressure, to a spring, or to its own weight
2. : ball cock
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012