The Collaborative International Dictionary of English v.0.48:
Post \Post\, n. [AS., fr. L. postis, akin to ponere, positum, to
place. See Position, and cf. 4th Post.]
1. A piece of timber, metal, or other solid substance, fixed,
or to be fixed, firmly in an upright position, especially
when intended as a stay or support to something else; a
pillar; as, a hitching post; a fence post; the posts of a
They shall take of the blood, and strike it on the
two side posts and on the upper doorpost of the
houses. --Ex. xii. 7.
Then by main force pulled up, and on his shoulders
The gates of Azza, post and massy bar. --Milton.
Unto his order he was a noble post. --Chaucer.
Note: Post, in the sense of an upright timber or strut, is
used in composition, in such words as king-post,
queen-post, crown-post, gatepost, etc.
2. The doorpost of a victualer's shop or inn, on which were
chalked the scores of customers; hence, a score; a debt.
When God sends coin
I will discharge your post. --S. Rowlands.
From pillar to post. See under Pillar.
Knight of the post. See under Knight.
Post hanger (Mach.), a bearing for a revolving shaft,
adapted to be fastened to a post.
Post hole, a hole in the ground to set the foot of a post
Post mill, a form of windmill so constructed that the whole
fabric rests on a vertical axis firmly fastened to the
ground, and capable of being turned as the direction of
the wind varies.
Post and stall (Coal Mining), a mode of working in which
pillars of coal are left to support the roof of the mine.