earthwork
n.
"mounds of earth thrown up for some purpose, especially as a military fortification," 1630s, from earth + work, n.. In this sense Old English had eorðbyrig "mound, embankment;" Old English eorðweorc meant "work on the land."
| 词汇 | earthwork | 
| 词根词缀 | Online Etymology Dictionary earthwork n. "mounds of earth thrown up for some purpose, especially as a military fortification," 1630s, from earth + work, n.. In this sense Old English had eorðbyrig "mound, embankment;" Old English eorðweorc meant "work on the land." | 
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