"shuttles" in the noun sense
1. shuttlecock, bird, birdie, shuttle
badminton equipment consisting of a ball of cork or rubber with a crown of feathers
2. shuttle
public transport that consists of a bus or train or airplane that flies back and forth between two points
3. shuttle
bobbin that passes the weft thread between the warp threads
"shuttles" in the verb sense
1. shuttle
travel back and forth between two points
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License