slate roll

slate roll, slate ridge

A cylindrical rod of slate; cut with a V-shaped notch on the bottom side to fit a ridge on a slate roof.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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[YES] WHY THEY'LL WIN: Coach Johnson thinks the opening four games--a gauntlet that entails Magnolia, Hamburg, Warren and Watson Chapel--will makes his bunch battle-tested by the time the meat of the Southeast slate rolls around.