Function: noun
Date: 1839
: a valve in which a ball regulates the aperture especially by its rise and fall due to fluid pressure, a spring, or its own weight
Function: noun
Date: 1839
: a valve in which a ball regulates the aperture especially by its rise and fall due to fluid pressure, a spring, or its own weight
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012