a horizontal line between the springs of an arch or dome.
the rise or the angle of the rise of an arch.
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Words nearby springing line
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for springing line
Their arches are richly moulded and acutely pointed, the springing-line being rather low down.Bell's Cathedrals: The Cathedral Church of Ripon|Cecil Walter Charles Hallett