n.
  - an extraordinary and welcome event that is not explicable by natural or scientific laws, attributed to a divine agency. 
▸a remarkable and very welcome occurrence.
 - an amazing product or achievement, or an outstanding example of something:
 a miracle of design.
 
 
  Etymology
  ME: via OFr. from L. miraculum ‘object of wonder’, from mirari ‘to wonder’, from mirus ‘wonderful’.