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crown, 9
1. Any upper terminal feature in architecture.
2. The top of an arch including the keystone, or of a vault.
3. The corona of a cornice, sometimes including elements above it.
4. The camber of a beam.
5. The central area of any
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
* Choosing the amount of crowning and how it's calculated
What I call "finish crowning will take care of these rough edges, and can be easily applied to new firearms (when required, as is often the case) or to any firearm where the muzzle undergoes major crowning during routine barrel work.
I'm not sure if the crowning of Mary was ever an indulgenced activity, but if so, this event certainly racked up grace like a triple word score in the game of Scrabble.