pit-heap
noun
A heap of excavated material near the mouth of a mine shaft; (hence) the whole of the surface works of a coal mine.
Origin
Mid 18th century.
| 单词 | pit-heap |
| 释义 | pit-heapnoun A heap of excavated material near the mouth of a mine shaft; (hence) the whole of the surface works of a coal mine. Origin |
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