'Mare's-tail' definitions:
Definition of 'Mare's-tail'
From: GCIDE
- Mare's-tail \Mare's"-tail`\, n.
- 1. A long streaky cloud, spreading out like a horse's tail, and believed to indicate rain; a cirrus cloud. See Cloud. [1913 Webster]
- Mackerel sky and mare's-tails Make tall ships carry low sails. --Old Rhyme. [1913 Webster]
- 2. (Bot.) An aquatic plant of the genus Hippuris ({Hippuris vulgaris}), having narrow leaves in whorls. [1913 Webster]