Definitions of launch:

• noun:   a motorboat with an open deck or a half deck
• noun:   the act of propelling with force
• verb:   smoothen the surface of
• verb:   propel with force

  Example: "Launch the space shuttle"

• verb:   get going; give impetus to

  Example: "Launch a career"

• verb:   launch for the first time; launch on a maiden voyage

  Example: "Launch a ship"

• verb:   begin with vigor

  Example: "He launched into a long diatribe"

• verb:   set up or found