horsetails
noun
Definitions
The tail of a horse.
Any of various simple vascular plants, of the order Equisetales, that have hollow stems and produce spores.
A Turkish standard denoting rank.
Example: Commanders were distinguished by the number of horsetails carried before them. The sultan had seven, the grand vizier five, and the pashas three, two, or one.
A mare's tail, a water plant in genus Hippuris.