cirrus
/ˈsɪrəs/noun
(pl. cirri /-raɪ/)
1
- mass noun cloud forming wispy filamentous tufted streaks or 'mare's tails' at high altitude (usually 5 to 13 km, 16,500 to 45,000 ft)卷云（高海拔［常为5至13公里, 即16,500至45,000英尺］处的云形成一绺绺细丝呈簇条状云, 或称“驴尾”）。
2
- Zoology a slender tendril or hair-like filament, such as the appendage of a barnacle, the barbel of a fish, or the intromittent organ of an earthworm【动】触毛, 触须。
2.1
- Botany a tendril【植】卷须。
词源
early 18th cent. （in the sense 'tendril'）： from Latin, literally 'a curl'.