mare's tail

1. 1.

   a long narrow flowing cirrus cloud

   Broadercirrus

Questions about mare's tail

What does mare's tail mean?

mare's tail means "a long narrow flowing cirrus cloud".

Is mare's tail a common word?

mare's tail is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.