This is the 2553rd most frequent Russian word.
середины
"Середины" means "middle" or "center" in English.
The word "середины" refers to the central section or the 'middle' part of the book, indicating the starting point of reading.
Я начал читать книгу с середины.
I started reading the book from the middle.
The word "середины" here is used to specify the central period of the season of autumn, meaning 'mid-autumn'.
Середины осени у нас начинается отопительный сезон.
Our heating season starts in mid-autumn.
The word "середины" describes the central point of the street, used to denote the focus of reaching or the distance towards it.