Related topics: Mail
post‧al [only before noun]
relating to the official system which takes letters from one place to another:
the U.S. postal service
an increase in postal charges
relating to sending things by post:
Candidates are chosen by a postal ballot of all party members.
postal vote British English
Housebound voters should register early for a postal vote.
3 American English informal
to become very angry and behave in a violent way