: a closer that is less than half a brick; specifically : a brick of full length and thickness but half width that is used at the end of a course next to the quoin header — compare king closer
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/kloh"zer/, Masonry.
1. a brick of normal length and thickness but of half normal width, used to complete a course or to space regular bricks.
2. a brick of half the usual length, for completing a course or for spacing regular bricks. Also called queen closure. Cf. king closer.
[1835-45]
Useful english dictionary. 2012.