plural of Van Allen radiation belt

Politely asks someone in a vehicle to put on their seat belt.

A 64-mile Interstate freeway surrounding Washington, D.C.. / (mostly local usage) The expressway that surrounds another city.

Of or relating to the culture of Washington, D.C.; politicized.

(US) Within the portions of Washington D.C., Maryland and Virginia encircled by Interstate 495. (The Washington Beltway)

(US) A freeway that encircles a city.

plural of beltway

The first day of May (since 1752); May Day, a Scottish quarter day, sometimes associated by Christians with the nearest Church Feast, the Invention of the Cross (May 3rd), and Whitsunday (May 15th).

Not wearing or not possessing a belt. / Not wearing a seatbelt. / Not requiring a belt.

(Britain, informal) Anything that is particularly good of its class. / (Britain, informal) A very good-looking person.