In its original and strict sense, out means from the interior of something; beyond the limits or boundary of somethings; in a position or relation which is exterior to something; -- opposed to in or into. The something may be expressed after of, from, etc. (see Out of, below); or, if not expressed, it is implied; as, he is out; or, he is out of the house, office, business, etc.; he came out; or, he came out from the ship, meeting, sect, party, etc.
Beyond the limits of concealment, confinement, privacy, constraint, etc., actual or figurative; hence, not in concealment, constraint, etc., in, or into, a state of freedom, openness, disclosure, publicity, etc.; a matter of public knowledge; as, the sun shines out; he laughed out, to be out at the elbows; the secret has leaked out, or is out; the disease broke out on his face; the book is out.
Beyond the limit of existence, continuance, or supply; to the end; completely; hence, in, or into, a condition of extinction, exhaustion, completion; as, the fuel, or the fire, has burned out; that style is on the way out.