Of the surface or appearance of an artefact, or of part of an animal or plant structure: wrinkled, corrugated, fluted, striated; plicate.

Having raised lines or stripes, like cords, upon the surface; esp. of textile fabrics: ribbed, twilled. (See also cord, v.1 3).

Bent into regular curved folds or grooves; as corrugated iron, sheet iron so bent (for increase of its strength), used for making walls, roofs…

Ribbed and furrowed like corduroy.

Esp. of fabric or paper: ribbed, corrugated; (also) wavy, wrinkled. Cf. crinkled, adj.

attributive as adj. Corrugated, furrowed, esp. as a result of weather and usage.