noun
: a permanent circular turntable at an airplane factory or airport marked with the cardinal and quadrantal points of the compass for swinging an airplane to ascertain compass deviation
noun
: a permanent circular turntable at an airplane factory or airport marked with the cardinal and quadrantal points of the compass for swinging an airplane to ascertain compass deviation
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012