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by drawing, contraction, pressure, bending, or otherwise; to wrinkle; to purse up; as, to corrugate plates of iron; to corrugate the forehead. 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 corrug…

or floor beams of a building, for the purpose of supporting the tiles, plastering, etc. A corrugated metallic strip or plate is sometimes used. Lath brick, a long, slender brick, used in making the floor on which malt is placed in the drying kiln. Lath nail a slender nail for fastening laths.

To gather into small folds or wrinkles; to contract into ridges and furrows; to corrugate; -- often with up; as, to pucker up the mouth. "His skin [was] puckered up in wrinkles." Spectator.

To contract into furrows and prominences; to make a wrinkle or wrinkles in; to corrugate; as, wrinkle the skin or the brow. "Sport that wrinkled Care derides." Milton. Her wrinkled form in black and white arrayed. Pope.

Full of wrinkles; having a tendency to be wrinkled; corrugated; puckered. G. Eliot. His old wrinkly face grew quite blown out at last. Carlyle.