This is the 10757th most frequent Polish word.
dusić
To choke, suffocate, or to stew (in cooking).
In this context, 'dusić' refers to cooking food gently with moisture, typically covered.
Powoli dusić cebulę na patelni, aż stanie się miękka.
Slowly stew the onion in the pan until it becomes soft.
Here, 'dusić się' is used metaphorically to describe feeling physically or emotionally suffocated in a situation.
Dusiłem się w tłumie ludzi, nie mogąc zaczerpnąć świeżego powietrza.
I was suffocating in the crowd of people, unable to catch fresh air.
The word 'dusić' in this phrase is used figuratively, implying stifling someone's freedom or individuality.