Corrugate \Cor"ru*gate\ (k?r"r?-g?t), a. [L. corrugatus, p. p.
of corrugare; cor-+ rugare to wrinkle, ruga wrinkle; of
uncertain origin.]
Wrinkled; crumpled; furrowed; contracted into ridges and
furrows.
[1913 Webster]
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Corrugate \Cor"ru*gate\ (-g?t), v. t. [imp. & p. p. Corrugated
(-g?`t?d); p. pr. & vb. n. Corrugating (-g?`t?ng).]
To form or shape into wrinkles or folds, or alternate ridges
and grooves, as by drawing, contraction, pressure, bending,
or otherwise; to wrinkle; to purse up; as, to corrugate
plates of iron; to corrugate the forehead.
[1913 Webster]
Corrugated iron, sheet iron bent into a series of alternate
ridges and grooves in parallel lines, giving it greater
stiffness.
Corrugated paper, a thick, coarse paper corrugated in order
to give it elasticity. It is used as a wrapping material
for fragile articles, as bottles.
[1913 Webster]
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