TOEFL postmaster Definition An official in charge of a post office. Example "The postmaster organized the holiday mail delivery schedule." Sign in to save TOEFL Quiz → ← posthumous postoperative → Study tips featuring "postmaster" TOEFL Academic Vocabulary: Study by Topic Related words TOEFL swiftness GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze