cirrus

名词 cirrus:

1. usually coiled
   同义词：cirrhus
2. a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles)
   同义词：cirrus cloud
3. a slender flexible animal appendage as on barnacles or crinoids or many insects; often tactile

cir.rus

n.（名词）
【复数】 cir.ri[sôr.o.]
A high-altitude cloud composed of narrow bands or patches of thin, generally white, fleecy parts.
卷云：一种高空云，由狭条状或小块状的薄絮般的，通常是白色的部分组成
Botany A tendril or similar part.
【植物学】 卷须：卷须或类似的部分
Zoology A slender, flexible appendage, such as the fused cilia of certain protozoans.
【动物学】 触须：一种细长、柔软的突出物，如某些原生动物的融合的纤毛

来源：
Latin [curl of hair]
拉丁语 [卷头发]