Dictionary:

squinch¹

  (skwĭnch)

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squinch1

(Precision Graphics)

A structure, such as a section of vaulting or corbeling, set diagonally across the interior angle between two walls to provide a transition from a square to a polygonal or more nearly circular base on which to construct a dome.

[Alteration of scuncheon, from Middle English sconchon, from Old French escoinson : es-, out of (from Latin ex-; see ex–) + coin, angle, wedge; see coin.]

To squeeze, twist, or draw together: squinched her eyes shut.

[Alteration of SQUINT.]

verb

To peer with the eyes partly closed: squint. Idioms: screw up one's eyes. See see/not see.

1. Corbeling, often arcuate, built at the upper corners of a structural bay to support its tangent, smaller dome or drum.
2. A small arch across the corner of a square room which supports a superimposed mass; also called a sconce.

squinch, 2

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