Corrugation

Noun
1. corrugation (a ridge on a corrugated surface)

2. corrugation (the act of shaping into parallel ridges and grooves)

Adjectives
delicate; microscopic; faint; threadlike; fluted; transverse; deep; shallow; intense; decided.

Thesaurus
bezel, broken ground, broken water, chamfer, chase, chink, chop, cockle, corduroy, corduroy road, crack, crankle, cranny, crease, crimp, crinkle, crumple, cut, dado, engraving, flute, fluting, fold, furrow, gash, goose bumps, goose pimples, gooseflesh, gouge, groove, horripilation, incision, lop, microgroove, plica, pucker, rabbet, ridge, rifling, rimple, ripple, rivel, rough, ruck, rumple, rut, sandpaper, score, scratch, slit, streak, stria, striation, sulcation, sulcus, washboard, well-worn groove, wimple, wrinkle