postmaster general

/P OW1 S T M AE0 S T ER0 JH EH1 N ER0 AH0 L/
noun
  1. 1

    A postmaster responsible for an entire mail distribution organization (usually sponsored by a national government).

Source: https://en.wiktionary.org/wiki/Postmaster%20General, https://en.wiktionary.org/wiki/postmaster%20general