It might be faint at first, and it helps some to squinch your eyes closed.
From the sltrib.com
The invention of pendentives superseded the squinch technique.
From the en.wikipedia.org
In moments of profound emotion, his eyebrows squinch.
From the chron.com
Do you like sour things that make you squinch and pucker?
From the blogs.psychcentral.com
The Persians solved the problem of constructing a circular dome on a square building by the squinch.
From the en.wikipedia.org
You'd think a face couldn't squinch that way.
From the kansas.com
The squinch was probably invented in Iran.
From the en.wikipedia.org
Not long ago, when Hannah was a wrinkly, squinch-faced newborn and I was a sore, exhausted new mother, that tiny onesie swallowed her.
From the kansas.com
The squinch was invented in Iran.
From the en.wikipedia.org
More examples
A small arch built across the interior angle of two walls (usually to support a spire)
Crouch down
Flinch: draw back, as with fear or pain; "she flinched when they showed the slaughtering of the calf"
Squint: cross one's eyes as if in strabismus; "The children squinted so as to scare each other"
(squinched) having eyes half closed in order to see better; "squinched eyes"
A squinch in architecture is a piece of construction used for filling in the upper angles of a square room so as to form a proper base to receive an octagonal or spherical dome. It was the primitive solution of this problem, the perfected one being eventually provided by the pendentive. ...
A structure constructed between two adjacent walls to aid in the transition from a polygonal to a circular structure; as when a dome is constructed on top of a square room; to scrunch up (one's face)
Small arched vault supporting each corner of a dome over a square space.
In architecture, a device to effect a transition from a polygonal base to a circular *dome (see fig. 11.12).