noun
: a device used on a steam locomotive to inform the engineman by visual indication on a dial the proper percentage of cutoff to use in admitting steam to the cylinders
noun
: a device used on a steam locomotive to inform the engineman by visual indication on a dial the proper percentage of cutoff to use in admitting steam to the cylinders
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012