| Main Entry: | |
| 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: | cleft |
| Part of Speech: | noun |
| Definition: | break, gap |
| Synonyms: | aperture, arroyo, breach, canyon, chasm, chink, cleavage, clough, clove, crack, cranny, crevasse, crevice, fissure, fracture, gorge, gulch, opening, ravine, rent, rift, rima, rimation, rime, schism, slit |
| Antonyms: | closing, closure, solid |
| Main Entry: | gap |
| Part of Speech: | noun |
| Definition: | break, breach |
| Synonyms: | aperture, arroyo, blank, caesura, canyon, chasm, cleft, clove, crack, cranny, crevice, cut, defile, difference, disagreement, discontinuity, disparity, divergence, divide, division, fracture, gorge, gulch, gully, hiatus, hole, hollow, inconsistency, interlude, intermission, interruption, interspace, interstice, interval, lacuna, lull, notch, opening, orifice, pause, ravine, recess, rent, respite, rest, rift, rupture, separation, slit, slot, space, vacuity, void |
| Antonyms: | closure |
| Main Entry: | glen |
| Part of Speech: | noun |
| Definition: | valley |
| Synonyms: | canyon, combe, dale, dell, glade, gorge, vale |
| Main Entry: | gorge |
| Part of Speech: | noun |
| Definition: | valley |
| Synonyms: | abyss, arroyo, canyon, chasm, cleft, clough, clove, crevasse, fissure, flume, gap, glen, gulch, pass, ravine |
| 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 |
| Main Entry: | pass |
| Part of Speech: | noun |
| Definition: | opening through solid |
| Synonyms: | canyon, cut, gap, gorge, passage, passageway, path, ravine |
| Antonyms: | closing, closure |
| 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 |
| 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: | 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: | interspace |
| Part of Speech: | noun |
| Definition: | gap |
| Synonyms: | aperture, arroyo, blank, caesura, canyon, chasm, cleft, clove, crack*, cranny, crevice, cut, defile, difference, disagreement, discontinuity, disparity, divergence, divide, division, fracture, gorge, gulch, gully, hiatus, hole, hollow, inconsistency, interlude, intermission, interruption, interstice, interval, lacuna, lull, notch, opening, orifice, pause, ravine, recess, rent, respite, rest, rift, rupture, separation, slit, slot, space, vacuity, void |