Corrugated

[Jessica]

Wrinkled.

[Past tense] of [corrugate]

[Sarah]

(of a material or surface) shaped into a series of parallel ridges and grooves so as to give added rigidity and strength.

[Monty]

[Munted]; drunk, stoned, or similar. As in corrugated iron (the [wiggly] [roofing] iron).

[PussyCat]

Partially punctured.

[Kit]

[The space between] two separate [layers], [propped up] and supported, yet still seen as one.

[Justin Bieber]

Descriptive. [The space between] two separate [layers], [propped up] and supported, yet still seen as one.

[Greta]

(especially of sheets of iron or cardboard) having parallel rows of folds that look like a series of waves when seen from the edge: