1. a primitive flowerless plant with hollow jointed stems and small leaves, found in wet areas
Usage: botanical
2. the tail of a horse
3. a hairstyle in which long hair is gathered and tied at the back of the head to hang down like a horse’s tail

Examples

• Horsetails are among the oldest plants on Earth, dating back millions of years.
• The wetland was filled with horsetails growing along the water’s edge.
• She braided ribbons into the horse’s horsetail for the parade.
• The black stallion swished its horsetail to keep flies away.
• She pulled her hair back into a simple horsetail before going for a run.
• The gymnast’s horsetail bounced as she performed her routine.
• Ancient horsetail fossils show these plants once grew as tall as trees.