| Main Entry: | canyon |
| Part of Speech: | noun |
| Definition: | gulf in mountain area |
Synonyms: |
coulee, glen, gorge, gulch, gully, ravine, valley |
| Notes: | a canyon is a narrow chasm with steep cliff walls formed by running water; a gorge is a deep narrow passage with steep rocky sides formed by running water; a ravine is a deep narrow steep-sided valley formed by running water |
Antonyms: |
mountain |
| Main Entry: | ravine |
| Part of Speech: | noun |
| Definition: | gap in earth's surface |
Synonyms: |
abyss, arroyo, break, canyon, chasm, clove, coulee, crevasse, crevice, cut, defile, ditch, fissure, flume, gorge, gulch, gulf, gully, notch, pass, valley, wash |
Antonyms: |
plain |
| Main Entry: | valley |
| Part of Speech: | noun |
| Definition: | hollow in the land |
Synonyms: |
basin, bottom, canyon, channel, coulee, dale, dell, depression, dingle, glen, gorge, lowland, notch, plain, swale, trough, vale |
| Main Entry: | lava |
| Part of Speech: | noun |
| Definition: | volcano matter |
Synonyms: |
ashes, basalt, coulee, magma, obsidian, scoria, slag |