a brick of normal length and thickness but of half normal width, used to complete a course or to space regular bricks.
a brick of half the usual length, for completing a course or for spacing regular bricks.
Compare king closer.
Origin of queen closer
First recorded in 1835–45
Also called queen closure.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019