Definition from Wiktionary, the free dictionary
horsetail (plural horsetails)
- Any of various simple vascular plants, of the family Equisetaceae, that have hollow stems and produce spores.
- A Turkish standard denoting rank.
- 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.
Terms derived from horsetail