This is the 9803rd most frequent Turkish word.
asırlık
Centennial; aged a hundred years or very old.
The word 'asırlık' is used as a modifier to describe the quality of being very old, specifically referring to trees in this case.
Bu kasaba, asırlık ağaçlarla dolu bir parka sahip.
This town has a park filled with centuries-old trees.
Here, 'asırlık' is used figuratively to emphasize the long history and age of the recipes contributing to cultural identity.
Süregelen gelenekler ve asırlık tarifler bu toplumun kültürünü şekillendirir.
Ongoing traditions and century-old recipes shape the culture of this community.
In this sentence, 'asırlık' refers literally to the age of an object, the clock, expressing that it is very old.