shut·tle 
(shŭtl)
(shŭtl)n.
1.
a. Regular travel back and forth over an established, often short route by a vehicle.
b. A vehicle used in such travel: took the shuttle across town.
c. A route used by a vehicle in such travel: the Washington-New York air shuttle.
d. A space shuttle.
e. Travel between disputing parties by a diplomatic intermediary.
2.
a. A device used in weaving to carry the weft thread back and forth between the warp threads.
b. A device for holding the thread in tatting and netting and in a sewing machine.
v. shut·tled, shut·tling, shut·tles
v.intr.
To go, move, or travel back and forth, especially by a shuttle: business people who shuttle between European capitals.
v.tr.
1. To cause to move back and forth frequently.
2. To transport, especially by a shuttle: shuttle a scientific payload to an orbiting space station.
[Middle English shitel, shutel, weaver's shuttle, from Old English scytel, scutel, dart; see skeud- in the Appendix of Indo-European roots.]
shuttler n.
shuttle