pitch·stone 
(pĭchstōn′)
(pĭchstōn′)n.
Any of various volcanic glasses distinguished by their dull pitchlike luster.
[Translation of German Pechstein.]
| 单词 | pitchstone |
| 释义 | pitch·stone (pĭchstōn′)n. Any of various volcanic glasses distinguished by their dull pitchlike luster. [Translation of German Pechstein.] |
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