rule joint
/ˈruːl dʒɔɪnt/noun
A movable joint such as is used in folding rulers or table flaps.
Origin
Mid 18th century; earliest use found in Benjamin Gooch (?1708–1776), surgeon. From rule + joint.
| 单词 | rule joint |
| 释义 | rule joint/ˈruːl dʒɔɪnt/noun A movable joint such as is used in folding rulers or table flaps. Origin |
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