- a roof having two slopes of equal breadth and pitch meeting at a common ridge.
Origin of span roof
First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for span roof
Or it may be because the full light of a span-roof is too strong in most situations.The Woodlands Orchids
Span-roof garden frame (fig. 12) may under some circumstances be useful as a substitute for the three-light frame.
During the remainder of the year, they occupy a three-quarter span-roof house, in which an intermediate temperature is maintained.Cactus Culture For Amateurs
- a roof consisting of two equal sloping sides
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012