tinanvalanta

Noun

 * 1) tin casting act of casting objects of molten tin
 * 2) molybdomancy ancient form of divination by interpreting shapes formed when molten metal, typically lead or tin is dropped into water; now chiefly practised for fun on New Year's Eve

Usage notes

 * Molybdomancy is a common New Year tradition in the Nordic countries and Germany, Switzerland and Austria.
 * In Finland, tin used to be the favorite metal for New Year molybdomancy - hence the name - but is now replaced by cheaper lead.