Usually galvanized sheet iron or sheet steel shaped into straight parallel ridges and hollows WordNet 3.0 & Open English WordNet

Corrugated galvanised iron or steel, colloquially corrugated iron, wriggly tin, pailing, corrugated sheet metal, zinc or custom orb / corro sheet and occasionally abbreviated CGI is a building material composed of sheets of hot-dip galvanised mild steel, cold-rolled to produce a linear ridged pattern in them. Wikipedia

A building material composed of sheets of cold-rolled hot-dip galvanised mild steel Wikipedia Disambiguation

Type of metal building material Wikidata

Wikimedia disambiguation page Wikidata

Sheet iron bent into a series of alternate ridges and grooves in parallel lines, giving it greater stiffness. OmegaWiki

An iron sheet building material, usually galvanised, which has been pressed into corrugations. Wiktionary

Building material. Wiktionary (translation)