1) an act or sound of flopping; (of a play, book, record etc) a failure to please the public (flop)

2) the act of making something known to the public (publication)

3) to bring (something) to the attention of the public (publicize)

4) (to cause a book, magazine, article etc) to be printed and offered for sale; to make (something) known to the public (publish)

5) (an act of) help or assistance to another or others; an organized system of work etc for the needs of the public (service)