STIFFENING

stiffening. Stiffening, n. a making stiff, a thing to stiffen

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Stiff″en‐ing, n. 1. 1. Act or process of making stiff.
2. 2. Something used to make anything stiff.
Stiffening order (Com.), a permission granted by the customs department to take cargo or ballast on board before the old cargo is out, in order to steady the ship.