This is the 577th most frequent Arabic word.
شرطة
Police.
The word "شرطة" refers to the police force as an entity in this sentence.
رأيت الشرطة في الشارع.
I saw the police in the street.
Here, "شرطة" refers to the police department of the city.
عمله هو شرطي في شرطة المدينة.
His job is a police officer in the city police department.
In this instance, "شرطة" means a dash or a small line used for punctuation.