grasp the meaning → πιάνω το νόημα, μπαίνω στο νόημα, καταλαβαίνω τι γίνεται
to understand something
He was finding it difficult to grasp the rules of the game.
grasp the meaning/significance of something: You should try to
grasp the meaning of whole sentences.
grasp - definition of grasp by Macmillan Dictionary