black helmet
noun
A Caribbean helmet shell of the genus Cassis, especially the king helmet (C. tuberosa) and the queen helmet (C. madagascariensis), both used in making shell cameos.
Origin
Mid 19th century; earliest use found in The Daily News.
| 单词 | black helmet |
| 释义 | black helmetnoun A Caribbean helmet shell of the genus Cassis, especially the king helmet (C. tuberosa) and the queen helmet (C. madagascariensis), both used in making shell cameos. Origin |
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