This is the 6114th most frequent Russian word.
старые
"Старые" means "old" (plural form).
Here, 'старые' modifies 'книги,' describing their age.
У нас есть старые книги в библиотеке.
We have old books in the library.
In this case, 'старые' applies to 'часы,' indicating their antiquity.
Старые часы на стене все еще идут.
The old clock on the wall is still ticking.
Here, 'старые' describes 'обиды,' referring to the grievances as being from the past.