1. A flowerless plant with jointed, hollow stems and whorled leaves, belonging to the genus Equisetum; horsetail.
Usage: botanical term; also called horsetail

Examples

• The equisetum grew abundantly along the stream bank.
• Equisetum is one of the oldest plant groups, dating back to prehistoric times.
• The hollow stems of equisetum were historically used for scouring and polishing.
• Botanists study equisetum to understand the evolution of vascular plants.
• The equisetum's distinctive jointed structure makes it easy to identify in the field.