1. Guiding star; a star that is used as a reference point in navigation of astronomy; SYN. loadstar.
2. Something that serves as a model or guide; SYN. loadstar.
Or loadstar; A star used in navigation or astronomy, often Polaris, the Pole Star. lode star
Polaris, Nordstern, a Ursae Minoris, hellster Stern im Kleinen Bären, 1 Grad vom Nordpol des Himmels entfernt.