noun

• (figurative, by extension) A generated advantage which makes forward movement easier.
  "The Republicans, who in fact quintessentially represent what I understand to be private and special interests of a narrow economic kind, have nevertheless managed, flying in the slipstream of Ronald Reagan's rhetoric, to look like the true guardians of the nation's public interest."
• (aviation) The airflow over a propeller-driven aircraft generated by the motion of its propeller(s).
• (uncountable, fiction) A genre of fantastic or non-realistic fiction that crosses conventional genre boundaries.
  "Slipstream is not simply a mixture of fantasy and realism, but something which lies between or even beyond the two."

verb

• (computing, transitive) To incorporate additional software (such as patches) into an existing installer.
  "You do this by slipstreaming the updates into the distribution folder."