Definition of "corrugations" []

• Plural form of corrugation. (noun)

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• "Two take a cat food can (or small tuna fish can) fill it with a strip of corrugated cardboard coiled into a spiral (so the corrugations are aligned with the axis of the can), once the can is filled with the cardboard coil then fill the can with melted parrafin wax."
• "The principal object of these flutes or "corrugations" is to give passage for the escape to the surface of the water forced through the center core hole in driving the pile."
• "Criss-cross the corrugations and two or three layers becomes very sturdy."