noun
Etymology: joint (I)
: the distance in 64ths of an inch between the ends of contiguous rails measured at a point about 5/8 inch below the top of the rail
noun
Etymology: joint (I)
: the distance in 64ths of an inch between the ends of contiguous rails measured at a point about 5/8 inch below the top of the rail
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012