noun
: one of the upper diagonal members of a roof truss supporting the purlins and common rafters or those joints to which the roof boarding is secured — see roof illustration
noun
: one of the upper diagonal members of a roof truss supporting the purlins and common rafters or those joints to which the roof boarding is secured — see roof illustration
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012