This is the 7553rd most frequent Polish word.
kuli
"Kuli" is the plural form of "kula," meaning "balls" or "spheres" in English.
Here, 'kuli' is the genitive singular form of 'kula', meaning 'ball'. It is used to describe possession or association with the object.
Kupiłem nową kuli do gry w bilard.
I bought a new ball for playing billiards.
In this sentence, 'kuli' refers to the genitive singular form of 'kula', meaning 'bullet'. The use indicates an association with the fear towards the 'bullet'.
Dziecko schowało się pod stołem, obawiając się kuli.
The child hid under the table, afraid of the bullet.
'Kuli' again is the genitive singular form of 'kula', here implying a bullet as the source of the soldier's injury.