ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
Etymology: post (IV) + master
1.
a. : an official in charge of posts or couriers
b. : a local official charged with carrying the mails from his station to the next
c. : a local official in charge of receiving and distributing the mail
d. : one who has charge of a post office
2.
a. : one who has charge of a station for accommodation of travelers
b. : one who supplies post-horses
3. : a holder of a scholarship (as at Merton College, Oxford) originally entitling the recepient to an allowance of food