POST n.
ich post horses are kept. (b) A town in which a post office is established by law. -- To ride post, to ride, as a carrier of dispatches, from place to place; hence, to ride rapidly, with as little delay as possible. -- To travel post, to travel, as a post does, by relays of horses, or by keeping one carriage to which…
POTASSIUM n.
An Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium).