mare's-tail Meaning, Definition & Usage

Mare's"-tail` noun

Definitions

1. A long streaky cloud, spreading out like a horse's tail, and believed to indicate rain; a cirrus cloud. See Cloud.

   Mackerel sky and mare's-tails Make tall ships carry low sails. Old Rhyme.

2. (Bot.) An aquatic plant of the genus Hippuris (H.vulgaris), having narrow leaves in whorls.