This is the 4518th most frequent Polish word.
kryje
"Protects" or "hides."
Here, 'kryje' means 'hides' or 'conceals', referring to something contained within the book that is not immediately visible.
Ta książka kryje głębokie przesłanie.
This book hides a deep message.
In this sentence, 'kryje się' translates to 'hides oneself', indicating a physical action of concealing one's presence.
Zawsze kryje się za filarem, kiedy ktoś przychodzi.
He always hides behind a column when someone comes.
Here, 'kryje' signifies the act of obscuring or concealing the mysteries within the darkness.