| Main Entry: | |
| Part of Speech: | noun |
| Definition: | raised part of solid |
| Synonyms: | backbone, chine, corrugation, crease, crinkle, elevation, esker, fold, furrow, hill, hogback, moraine, parapet, plica, pole, range, rib, rim, rimple, rivel, ruck, seam, spine, upland, wrinkle |
| Antonyms: | flat, plain |