(~s)
1.
If you make a ~, you travel to a place and then back again.
The train operates the 2,400-mile ~ once a week.
N-COUNT
2.
A round-trip ticket is a ticket for a train, bus, or plane that allows you to travel to a particular place and then back again. (AM; in BRIT, use return )
Mexicana Airlines has announced cheaper round-trip tickets between Los Angeles and cities it serves in Mexico.
ADJ: ADJ n