noun
corrugated sheet; corrugated plate
Refers to a sheet of material (metal, plastic, etc.) with a wavy cross-section, commonly used in roofing, siding, and packaging.
屋根に波板を敷いた。
We laid corrugated sheets on the roof.
この波板はプラスチック製で軽い。
This corrugated sheet is made of plastic and is light.