Source : Webster's Revised Unabridged Dictionary (1913)

Loreto \Lo*ret"o\, or Loretto \Lo*ret"to\, nuns \nuns\ [From
   Loreto, a city in Italy famous for its Holy House, said to be
   that in which Jesus lived, brought by angels from Nazareth.]
   (R. C. Ch.)
   Members of a congregation of nuns founded by Mrs. Mary Teresa
   Ball, near Dublin, Ireland, in 1822, and now spread over
   Ireland, India, Canada, and the United States. The nuns are
   called also {Ladies of Loreto}. They are engaged in teaching
   girls.