(~s, shuttling, ~d)
1.
A ~ is the same as a space ~ .
N-COUNT
2.
A ~ is a plane, bus, or train which makes frequent journeys between two places.
...~ flights between London and Manchester.
N-COUNT: oft N n
3.
If someone or something ~s or is ~d from one place to another place, they frequently go from one place to the other.
He and colleagues have ~d back and forth between the three capitals...
Machine parts were also being ~d across the border without authorisation.
VERB: V prep/adv, be V-ed prep/adv