| antelope | (noun) graceful Old World ruminant with long legs and horns directed upward and backward; includes gazelles, springboks, impalas, addax, gerenuks, blackbucks, dik-diks | - |
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| downslope | (noun) a downward slope or bend | Synonyms: declension, declination, decline, declivity, descent, fall |
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| envelope | (noun) any wrapper or covering | - |
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| (noun) a flat (usually rectangular) container for a letter, thin package, etc. | - |
| (noun) the bag containing the gas in a balloon | Synonyms: gasbag |
| (noun) the maximum operating capability of a system (especially an aircraft) | - |
| (noun) a natural covering (as by a fluid) | - |
| (noun) a curve that is tangent to each of a family of curves | - |
| lope | (noun) a smooth three-beat gait; between a trot and a gallop | Synonyms: canter |
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| (noun) a slow pace of running | Synonyms: jog, trot |
| malope | (noun) western Mediterranean annual having deep purple-red flowers subtended by 3 large cordate bracts | Synonyms: Malope trifida |
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| slope | (noun) the property possessed by a line or surface that departs from the horizontal | Synonyms: gradient |
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| (noun) an elevated geological formation | Synonyms: incline, side |