Noun

1. the low pressure zone immediately following a rapidly moving object, caused by turbulence

Verb

1. To take advantage of the suction produced by a slipstream by travelling immediately behind the slipstream generator.

   Although dangerous, over the road truck drivers sometimes slipstream with each other to save fuel.

2. To incorporate additional software (such as patches) into an existing installer.
   • 2003, William Boswell, Inside Windows Server 2003‎

     You do this by slipstreaming the updates into the distribution folder.

   • 2004, Ed Bott, Carl Siechert, Craig Stinson, Microsoft Windows XP inside out

     A better solution is to create a bootable Windows XP installation CD slipstreamed with the current service pack...

   • 2005, Jesper M Johansson, Steve Riley, Protect your Windows network: from perimeter to data‎

     It is illegal to distribute slipstreamed CDs. In some locales, it may also be illegal to create them.