Added 9 October 2026 postmaster /ˈpoʊstˌmæstɚ/ noun Categories: PeopleRare Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about postmaster at Wordnik → Where our words come from → The head of a post office. The administrator of an electronic mail system. A kind of scholar at Merton College, Oxford; portionist. Origin From post + master. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: postmanmailmanpostalpositionssubpostmasterpostholdersubpostmastershipsubpostmistresspostportmaster Back to today's word