Viking see, Viking memorize. That’s how Vikings learn things. They see something, and then they memorize it. Quite simple, really.

It can also mean awake. Just remember that Vikings can't see if they aren't awake. There won't be anything to memorize if their eyes are still closed, after all!

Every morning, a cock (かく) crows and rouses the Vikings. Seeing this, one of the Vikings memorizes the cock crow so that he can mimic it and play pranks on his fellow Vikings.