以上来源于: WordNet
N a small beaklike process, such as the hooked projection from the top of the head in tapeworms or the outgrowth from the stigma of an orchid (动物的)顶突; (植物的)蕊喙 [biology]
Rudimentary rostellum was found obviously in 3 of 10 scolices of the worms from Duyun.
染色观察都匀牛带绦虫10个头节中有3个明显可见发育不良的顶突。
There were 4 suckers in C. pisiformis and the scolex of T. pisiformis, and 37 hooks in the rostellum arranging with inner and outer rings.
结果表明，豆状囊尾蚴和豆状带绦虫均有4个吸盘，37个小钩分内、外两圈排列在顶突上。
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