A person or thing that foreshadows or foretells the coming of someone or something.
To announce or precede; to be a harbinger of.
A person, principle, or thing which acts as a guide; a guiding light; also, something which attracts much attention; a centre of attention.
The star visible to the naked eye which was in the past, is now, or will be in the future nearest a celestial pole of a planet.