(n)post, stationthe position where someone (as a guard or sentry) stands or is assigned to stand“a soldier manned the entrance post”, “a sentry station”
(n)military post, postmilitary 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)postan upright consisting of a piece of timber or metal fixed firmly in an upright position“he set a row of posts in the ground and strung barbwire between them”
(n)mail, postany 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)post, stakea 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”
(n)mail, mail service, postal service, postthe system whereby messages are transmitted via the post office“the mail handles billions of items every day”, “he works for the United States mail service”, “in England they call mail `the post'”