| 释义 |
Definition of pencil stone in English: pencil stonenoun rare Pyrophyllite or a similar material used to make slate pencils.
Origin Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. Definition of pencil stone in US English: pencil stonenoun rare Pyrophyllite or a similar material used to make slate pencils.
Origin Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. |