Added 9 October 2026 messmate noun Categories: PeopleObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about messmate at Wordnik → Where our words come from → An associate with whom one shares a mess (eating place) on a ship. Any of various eucalypts with rough bark, specifically Eucalyptus obliqua. Origin From mess + mate. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: matelotmateshipmatiemessmatemessengermiteymakematessmeasemessager Back to today's word