Elizabeth was filled with the Holy Ghost - The meaning of this seems to be that she was filled with joy; with a disposition to praise God; with a prophetic spirit, or a knowledge of the character of the child that should be born of her. All these were produced by the Holy Spirit.
Related Commentaries of Luke 1:41
Luke 1:41
41 And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost: