The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            The pilot can no loadstar see.        --Spenser.
      [1913 Webster]

   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] Loadstone

WordNet (r) 3.0 (2006):

loadstar
    n 1: guiding star; a star that is used as a reference point in
         navigation or astronomy [syn: lodestar, loadstar]
    2: something that serves as a model or guide [syn: lodestar,
       loadstar]