equisetum
/ˌɛkwɪˈsiːtəm
/noun (plural equiseta /ˌɛkwɪˈsiːtə/ or equisetums) Botany
A plant of a genus that comprises the horsetails.
- Genus Equisetum, family Equisetaceae.
- Horsetails or equisetum can be your nightmare if you have recently laid tarmacadam.
- The pond is planted with equisetum, irises, and other water lovers.
Origin
Modern Latin, from Latin equus 'horse' + saeta 'bristle'.