Niobe

from WordNet (r) 3.0 (2006)

Niobe
    n 1: (Greek mythology) the daughter of Tantalus whose boasting
         about her children provoked Apollo and Artemis to slay them
         all; Niobe was turned to stone while bewailing her loss

from The Collaborative International Dictionary of English v.0.48

Niobe \Ni"o*be\, n. [L. Nioba, Niobe, Gr. ?.] (Class. Myth.)
   The daughter of Tantalus, and wife of Amphion, king of
   Thebes. Her pride in her children provoked Apollo and Diana,
   who slew them all. Niobe herself was changed by the gods into
   stone.
   [1913 Webster]