spicule

详细解释:n. 针状体, 小穗, 空壳, 骨针
【医】 针, 刺; 交合刺

词型变化：

名词复数:spicules形容词:spicular异体字:spicula

英语解释：

名词 spicule:

small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals同义词：spiculum