Added 10 October 2026 hairbrush noun Categories: ThingsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about hairbrush at Wordnik → Where our words come from → A brush used to groom a person's hair. Origin From hair + brush. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: brushtoothbrusheraserdetanglerwirebrushbrushbarpickwhiskwire-brushbrushing Back to today's word