Definition of "groundspeed" [groundspeed]

• The speed of an aircraft relative to the ground (noun)

WordNet. Princeton University. 2010.

• "Somewhere, on the internet, I can type in a flight number, and somehow it pops up with a picture showing me where they are, and enough detail on the plane to tell me it has a groundspeed of 554mph - fortunately they're doing that out of the way at 36,000 feet."
• "Many of its riders were striding along to enhance their groundspeed, but I stood still at the far right side, since I was in no particular hurry."
• "I spun up my inertia to get groundspeed indication to kind of give me a rough guess."