This is the 4787th most frequent Polish word.
odjechał
"Odjechał" means "he/she/it left or drove away" in English.
The word 'odjechał' here describes the action of departing from a place in the context of a vehicle.
Pociąg odjechał ze stacji dokładnie o czwartej.
The train departed from the station exactly at four o'clock.
In this usage, 'odjechał' refers to someone leaving a place quickly, possibly in a vehicle.
Odjechał w pośpiechu, zapominając o swoich dokumentach.
He drove off in a hurry, forgetting his documents.
Here, 'odjechał' is employed figuratively to describe a conceptual departure, fitting a narrational context.