1. noun /pəʊst,poʊst/
sent via post; parcel post
2. verb /pəʊst,poʊst/
a) To hang (a notice) in a conspicuous manner for general review.
Post no bills.
b) To send to an electronic forum.
Since Jim was new to the game, he had to post $4 in order to receive a hand.
3. adverb /pəʊst,poʊst/
In this posture were affairs at the inn when a gentleman arrived there post.
b) sent via the postal service
He prided himself on looking neat even when he was riding post.
4. preposition /pəʊst,poʊst/
after; especially after a significant event that has long-term ramifications.
One of the most appealing things for me about Barack Obama has always been that he comes post the post-60s generation.
Wikipedia foundation.