This is the 9082nd most frequent Polish word.
strefę
"Strefę" means "zone" or "area" in English (accusative form of "strefa").
The word 'strefę' is used in its accusative form of 'strefa', meaning 'zone', to describe a designated area for silence.
Wjeżdżamy w strefę ciszy.
We are entering a quiet zone.
Here, 'strefa' describes a specific area, with the definite article implied in the grammar.
Ta strefa jest przeznaczona dla pieszych.
This zone is designated for pedestrians.
The word 'strefę' refers metaphorically to a conceptual area in its accusative form.