corrugated
/ˈkɔrəˌɡeɪtɪd/
adjective
- Shaped into a series of parallel ridges and grooves, usually to make something stronger or more flexible.
- She used corrugated plastic for the science fair project because it was lightweight and sturdy.
- The barn had a roof made of corrugated metal sheets.
- The package was shipped in a strong corrugated cardboard box.