A post-it note.

(idiomatic) On the way; soon to arrive.

(automotive) An A-pillar.

(networking) An HTTP request method used to send an arbitrary amount of data to a web server. / (computing) Acronym of power-on self-test.

Abbreviation of posterior.

(computing) To successfully perform a power-on self-test.

A long dowel or plank protruding from the ground; a fencepost; a lightpost. / (construction) A stud; a two-by-four. / A pole in a battery.

(obsolete) Each of a series of men stationed at specific places along a postroad, with responsibility for relaying letters and dispatches of the monarch (and later others) along the route.

To travel with relays of horses; to travel by post horses, originally as a courier. / To travel quickly; to hurry.

With the post, on post-horses; by a relay of horses (changing at every staging-post); hence, express, with speed, quickly. / Sent via the postal service.