This is the 10051st most frequent Polish word.
beretem
"Beretem" is the instrumental form of "beret," meaning "with a beret" in English.
In this context, 'beretem' refers to a type of hat known as a beret.
Założyłem beret przed wyjściem z domu.
I put on a beret before leaving the house.
Here, 'beretem' suggests an object resembling or metaphorically associated with a beret being thrown.
Trafiłem w cel jednym beretem.
I hit the target with one throw of a beret-shaped item.
'Beretem' in this metaphorical usage indicates a short distance, comparable to throwing a beret.