n.
military installation at which a body of troops is stationed; "this military post provides an important source of income for the town nearby"; "there is an officer's club on the post"
n.
any particular collection of letters or packages that is delivered; "your mail is on the table"; "is there any post for me?"; "she was opening her post"
n.
a pole or stake set up to mark something (as the start or end of a race track); "a pair of posts marked the goal"; "the corner of the lot was indicated by a stake"