- corrugated - shaped into alternating parallel grooves and ridges; "the surface of the ocean was rippled and corrugated"
Antonym: unfurrowed (indirect, via furrowed)
- corrugate - fold into ridges; "corrugate iron"
--1 is one way to fold, fold up, turn up
Sample sentence:Derived forms: noun corrugation1, noun corrugation2
Somebody ----s something