mill-cog
noun
Each of the cogs of the wheel on the driveshaft of a windmill or watermill.
Origin
Mid 17th century; earliest use found in John Evelyn (1620–1706), diarist and writer.
| 单词 | mill-cog |
| 释义 | mill-cognoun Each of the cogs of the wheel on the driveshaft of a windmill or watermill. Origin |
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