Dictionary of Omens and SuperstitionsWhat does it mean if a cat sits and washes itself in your doorway? Why should women have their hair cut only when the moon is waxing? Why do people from Yorkshire throw caterpillars over their shoulders? Do you avoid anything with the number thirteen and cross the road to avoid walking under ladders? Belief in superstitions links us to a time when everyday events and objects had magical significance, and knowledge of these could change your fate.