noun

• (film) The showing of a film in selected cinemas prior to its general release.
  "In 2004, Gibson’s roadshow tour for The Passion of the Christ saw him visiting church groups and giving impassioned speeches about the film (which Hollywood studios refused to fund or distribute)."
• (business) A series of meetings across different cities in which executives from a company have the opportunity to talk with current or potential investors.
  "I thought Equity had a pretty quick and easy way of illustrating what happens when a company decides to go public: from the pitch, to the due diligence, to the pricing, to the roadshow."

verb

• (transitive) To show in various places as part of a travelling excursion.