stiffener

/S T IH1 F AH0 N ER0/
noun
  1. 1

    Anything added to something in order to stiffen it, such as a support beam, or starch for a collar.

  2. 2

    (construction) 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.

  3. 3

    (slang) An alcoholic drink taken to fortify oneself.