cirrus

1. Synonym of tendril (“a thin, spirally coiling stem that attaches a plant to its support”).

2. A thin tendril-like appendage, such as a barbel (“whisker-like sensory organ around the mouth”) of some fish, a cilium of some species of protists, or a foot of some crustaceans of the infraclass Cirripedia.

   Cirrus

   отро́стокotróstok, у́сикúsik

3. (attributive, often)A principal high-level type of cloud, typically composed of thin, delicate, white filaments or wisps, or narrow bands.

   Cirrus, Cirruswolke, Zirrus

   пе́ристое о́блакоpéristoje óblako, пе́ристыйpéristyj

   або пір'ястіabo pirʺjasti, перистіperysti

   a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles)

4. (obsolete)A tuft of ornamental feathers.

5. (obsolete)A long, thin, wirelike tail feather.

irregular · Lesson