| acre | (noun) a unit of area (4840 square yards) used in English-speaking countries | - |
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| acreage | (noun) an area of ground used for some particular purpose (such as building or farming) | Synonyms: land area |
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| acres | (noun) extensive landed property (especially in the country) retained by the owner for his own use | Synonyms: demesne, estate, land, landed estate |
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| macrencephaly | (noun) an abnormally large braincase | - |
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| massacre | (noun) the savage and excessive killing of many people | Synonyms: butchery, carnage, mass murder, slaughter |
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| nacre | (noun) the iridescent internal layer of a mollusk shell | Synonyms: mother-of-pearl |
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| sacredness | (noun) the quality of being sacred | - |
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| wiseacre | (noun) an upstart who makes conceited, sardonic, insolent comments | Synonyms: smart aleck, weisenheimer, wise guy, wisenheimer |
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