noun (n)

• (physics) a device that attracts iron and produces a magnetic field(noun.artifact)

  source: wordnet30
• a characteristic that provides pleasure and attracts(noun.cognition)

  Synonym:
  attracter, attraction, attractive feature, attractor
  

  source: wordnet30
• The loadstone; a species of iron ore (the ferrosoferric or magnetic ore, Fe₃O₄) which has the property of attracting iron and some of its ores, and, when freely suspended, of pointing to the poles; -- called also natural magnet.(noun)

  source: webster1913