This is the 7145th most frequent Turkish word.
esk
"Esk" is not a standard Turkish word; it may be a typo or abbreviation.
Here, 'eski' means 'old' and refers to a previous state.
Eskin eski halini çok özlüyorum.
I really miss Eskin's old self.
Here, 'eskiler' is a plural form referring to old things or times.
Bu kitap, eskiler arasında bir klasik olarak bilinir.
This book is known as a classic among the old ones.
In this sentence, 'eskerden' derives from 'eski' forming the phrase 'from the old times'.