postmaster — English Dictionary

Noun

1. The head of a post office.

   Examples

   With that, Elvin Mercado became the postmaster of Manhattan, ruling the mails from the palatial James A. Farley Post Office on Eighth Avenue.

2. The administrator of an electronic mail system.

   Usage

   • Internet

3. A kind of scholar at Merton College, Oxford; portionist.

   Usage

   • UK usage

4. One who has charge of a station for the accommodation of travellers; one who supplies post horses.

   Usage

   • Archaic

Noun

1. the person in charge of a post office

   Broader terms

   master