horse tail —(also: pony tail) a type of women’s hair style with hair drawn back, tied and hanging down:
- She wore jeans and a cotton sweater, her hair was in a horse-tail.
mare’s tail—
1. a tall slender marsh plant:
- This is an old photograph of the submerged aquatic plant called mare’s-tail, Hippuris vulgaris.
2. long straight streaks of cirrus cloud (known as a sign of impending storm):
- Cirrus clouds are characterized by thin, wisplike strands, often accompanied by tufts, leading to their name of “mare’s tail.”