This is the 5460th most frequent Polish word.
słyszał
"He heard."
Here, 'słyszał' is used in the context of perceiving a sound.
Słyszał dźwięk dochodzący z sąsiedniego pokoju.
He heard a sound coming from the adjacent room.
In this sentence, 'słyszał' indicates awareness or information received.
Słyszał o nowym projekcie, który ma być wprowadzony.
He has heard about the new project that is going to be implemented.
Here, 'słyszał' is used in the idiomatic sense of being informed.