['lәudstɑ:]
(=lodestar) n.指示方向之星, 指导原则

Loadstar \Load"star`\, Lodestar \Lode"star`\, n. [Load, lode +
star. See {Lode}.]
1. A star that leads; a guiding star; esp., the polestar,
Polaris; also, the constellation containing the pole star,
the cynosure (Ursa Minor). --Chaucer. `` Your eyes are
lodestars.'' --Shak.

The pilot can no loadstar see. --Spenser.

2. Something that serves as a guide or provides direction; a
cynosure[2].
[PJC]

3. Something that attracts attention or on which the atention
is fixed; a cynosure[3].
[PJC]