A dried colony of the hydrozoan Sertularia argentea, which when dyed green has a fern-like appearance and is sold for ornament.
1950s; earliest use found in Walla Walla Union-Bulletin.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。