Added 9 October 2026 headcollar noun noun ! Definition from Wiktionary (CC BY-SA). More about headcollar at Wordnik → Where our words come from → A bitless headpiece for leading or tying up a horse. Origin From head + collar. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: halterheadpieceheadgearheadstallbridleheadstraphorsehoodhorsecollarhorse-collarmartingaleheadcloth Back to today's word