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Stiffener

noun, slang

Noun

1
Anything added to something in order to stiffen it, such as a support beam, or starch for a collar.
"[…] he wears a wisp of black silk round his neck, without any stiffener, as an apology for a neckerchief […]"
2
a member attached to a beam web to prevent loss of strength due to web buckling. wordnet
3
One of a series of angle bars, Z-bars, beams, rods, or other shapes, attached in order to provide them the necessary stiffness or rigidity.
4
material used for stiffening something wordnet
5
An alcoholic drink taken to fortify oneself. slang
"I believe the old man has taken himself off to the nearest bar for a stiffener."

From stiffen + -er.

Unscramble this word: stiffener