Long, flat strips of ground at airports where airplanes take off and land; also paths or strips where something moves along.
Compound of run + way. Way comes from Old English weg (path), and run refers to the action of moving quickly, literally a 'path for running.'
Airport runways have incredibly specific designs—they need to be long enough for a 400-ton aircraft to accelerate to 170+ mph, and the numbering system uses compass directions, making them an amazing combination of physics and geography.
Complete word intelligence in one call. Free tier — 50 lookups/day.