expression, godan verb (-tsu)
appear in a dream; visit in a dream
Used when a deity, spirit, or deceased person appears in someone's dream, often to give advice, a warning, or a message. The subject is the supernatural visitor.
亡くなった祖父が夢枕に立って、家族を案じていた。
My deceased grandfather appeared in my dream, worried about the family.
神
There is a legend that a god appeared in a dream and gave a divine message.