Oxford Dictionary's latest definition of the following words

Boss: Someone who is early when you are late and late when you are early.
Lecture: An art of transferring information from the notes of the Lecturer
to the notes of the students without passing through the minds of either.
Conference: The confusion of one man multiplied by the number present.
Compromise: The art of dividing a cake in such a way that everybody believes he got the biggest
piece.
Dictionary: A place where success comes before work.
Conference Room: A place where everybody talks, nobody listens and
everybody disagrees later on.
Classic: A book, which people praise, but do not read.
Office: A place where you can relax after your strenuous home life.
Etc.: A sign to make others believe that you know more than you actually do.
Committee: Individuals who can do nothing individually and sit to
decide that nothing can be done together.
Experience: The name men give to their mistakes.
Atom Bomb: An invention to end all inventions.
Philosopher: A fool who torments himself during life, to be spoken of when dead.
Diplomat: A person who tells you to go to hell in such a way that you actually look forward to the trip.
Politician: One who shakes your hand before elections and your
confidence after.
Opportunist: A person who starts taking bath if he accidentally falls into a river.
Optimist: A person who while falling from Eiffel tower says in midway
"See I am not injured yet."
Criminal: A guy no different from the rest.... except that he got caught.
Miser: A person who lives poor so that he can die rich.
Father: A banker provided by nature.
Yawn: The only time some married men ever get to open their mouth.
Cigarette: A pinch of tobacco rolled in paper with fire at one end & a fool on the other.
Tears: The hydraulic force by which masculine willpower is defeated by feminine waterpower.
Doctor: A person who kills your ills by pills, and kills you with his bills.
Smile: A curve that can set a lot of things straight ...