Definition of lead out:
(v) :
Used other than figuratively or idiomatically: see lead, out.
(v) :
(poker slang) To bet into a pot postflop from the first betting position.
(v) :
(printing, historical, transitive) To pad out (text) by inserting lead slugs between words.
(n) :
Alternative form of lead-out. [(broadcasting) A program scheduled to follow another.]