tail (something) in(to) (something)

tail (something) in(to) (something)

dated To insert some construction material, such as a beam, rafter, stone slab, etc., into something else, typically a wall. Usually used in passive constructions. The beam should be tailed in the wall at one end in order to create proper support for the platform. The kneeler is simply a block of stone that is well tailed into the wall.
See also: tail
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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