This is the 5728th most frequent Japanese word.
つかめる
"つかめる" means "to be able to grasp or seize."
Here 'つかめる' indicates the physical action of catching something, like holding an object.
彼女がボールを投げたとき、それをしっかりつかめた。
When she threw the ball, I firmly caught it.
Here 'つかめる' is used in the sense of understanding or comprehending the subject matter of a book.
その本の内容は簡単でつかめる。
The content of that book is simple and easy to grasp.
In this sentence, 'つかめる' means to grasp or comprehend emotions, indicating abstract understanding.