• hostail,
• hosptail,
• hopsitail,
• horsetrail,
• horselik,
• gorsetail,
• borsetail,
• horzetail,
• horesetail,
• horsestail,
• horseytail,
• horsetal,
• horsetial,
• horsetale,
• harstail,
• horsehail,
• Horseneil,
• horserase,
• horse-taill,
• hoarse-tail

• horsehead,
• horseweed,
• horse tick,
• horse-head,
• horstman,
• horsehide,
• horse-trail,
• horstmann.

The adjective form of the word "horsetail" is "horsetail-like".

The plural of the "horsetail" can be the "horsetails".

The singular of the "horsetail" can be the "horsetail".