Boondocking (or dry camping) refers to staying in an RV outside of an established campground for free without being hooked up to water, power, or sewer. Most RVers spend at least some nights parked without hook-ups, if only while traveling between destinations. Parking overnight at a truck stop, rest area, or Walmart parking lot is common. This is sometimes referred to as "blacktop boondocking."
Click HERE to access a great article on the difference between Boondocking, Dry Camping, and Dispersed Camping.