This is the 2653rd most frequent German word.
eignen
To be suitable or appropriate.
Here, 'eignet' is used reflexively with 'sich', meaning 'to be suitable or fit for'.
Dieses Buch eignet sich hervorragend zum Studieren.
This book is excellently suited for studying.
In this sentence, 'eignet sich' indicates someone's suitability for a specific role.
Er eignet sich gut für die Rolle des Lehrers.
He is well-suited for the role of the teacher.
Here, 'eignet sich' is used to describe the appropriateness or adaptability of an object to fulfill various tasks.