n.
Function: intransitive verb
Date: 1533
1 : to travel with post-horses
2 : to ride or travel with haste : HURRY
3 : to rise from the saddle and return to it in rhythm with a horse's trot
transitive verb
1 archaic : to dispatch in haste
2 : MAIL < post a letter>
3 a : to transfer or carry from a book of original entry to a ledger b : to make transfer entries in
4 : to make familiar with a subject : INFORM <kept her post ed on the latest gossip>