This is the 17609th most frequent Turkish word.
şapkalı
Wearing or having a hat.
Here, 'şapkalı' describes books with covers, metaphorically using the word 'şapka' (hat) to imply a protective top layer.
Kütüphanede birçok şapkalı kitap var.
There are many books with covers in the library.
In this example, 'şapkalı' characterizes the old man as wearing a hat as a physical feature.
Şapkalı yaşlı adam, parktaki herkesin dikkatini çekti.
The old man wearing a hat caught everyone's attention in the park.
Here, 'şapkalı' indicates letters that have diacritical marks, akin to 'hats' on the letters.