This is the 12003rd most frequent Polish word.
lecieć
"Lecieć" means "to fly" in English.
The verb "lecieć" is used to describe an action of flying, typically referring to something in motion through the air like an airplane.
Samolot leci na dużej wysokości.
The airplane is flying at a high altitude.
Here, "lecieć" is used metaphorically to indicate the passage of time occurring quickly.
Czas leci, kiedy dobrze się bawisz.
Time flies when you're having fun.
In this context, "lecieć" metaphorically means to hurry or rush to a destination.