This is the 14061st most frequent Russian word.
одолел
"Overcame" or "defeated."
In this sentence, 'одолел' is used to mean 'to overcome' or 'to successfully deal with a challenging issue.'
Он одолел сложную задачу.
He overcame a difficult task.
Here, 'одолел' is employed to signify 'to defeat' in the sense of winning against an opponent.
Я одолел соперника в шахматах.
I defeated the opponent in chess.
In this context, 'одолел' conveys the effort to complete an arduous or lengthy activity, in this case, reading a book.