miner's friend
(also miners' friend) now historical
noun
1An early type of steam engine.
2The Davy safety lamp.
Origin
Early 18th century; earliest use found in Thomas Savery (?1650–1715), engineer.
| 单词 | miner's friend |
| 释义 | miner's friend(also miners' friend) now historical noun 1An early type of steam engine. 2The Davy safety lamp. Origin |
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