corrugated

US /ˈkɔːr.ə.ɡeɪ.t̬ɪd/
UK /ˈkɔːr.ə.ɡeɪ.t̬ɪd/
"corrugated" picture
1.

shaped into alternate ridges and grooves

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The roof was made of corrugated iron sheets.
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We packed the fragile items in a corrugated cardboard box.
:
ridgedgroovedflutedribbedfurrowed