This is the 13016th most frequent Polish word.
odjeżdżają
"Odjeżdżają" means "they are departing" or "they are leaving" (e.g., by vehicle).
The verb 'odjeżdżają' is a third-person plural conjugation of 'odjeżdżać', meaning 'to depart' in the context of vehicles.
Pociągi odjeżdżają z peronu pierwszego.
The trains are departing from platform one.
In this sentence, 'odjeżdżają' implies the regular schedule of bus departures.
Autobusy odjeżdżają co godzinę.
The buses leave every hour.
Here, 'odjeżdżają' indicates vehicles departing from a place at a particular time.