Strong's #4144: ploos (pronounced plo'-os)
 from 4126; a sail, i.e. navigation:--course, sailing, voyage.
Thayer's Greek Lexicon:
 ́ 
 
  ploos 
 
 1) a voyage
 
  Part of Speech: noun masculine
Relation: from G4126
 
Usage:
This word is used 3 times:
Acts 21:7: "And when we had finished  our course from Tyre, we came to"
Acts 27:9: "time was spent, and  when sailing was now dangerous, because"
Acts 27:10: "Sirs, I perceive that  this voyage will be with hurt"