'Masked ball' definitions:

Definition of 'masked ball'

(from WordNet)
noun
A ball at which guests wear costumes and masks [syn: masked ball, masquerade ball, fancy-dress ball]

Definition of 'Masked ball'

From: GCIDE
  • Masked \Masked\, a.
  • 1. Wearing a mask or masks; characterized by masks; concealed; hidden. [1913 Webster]
  • 2. (Bot.) Same as Personate. [1913 Webster]
  • 3. (Zool.) Having the anterior part of the head differing decidedly in color from the rest of the plumage; -- said of birds. [1913 Webster]
  • Masked ball, a ball in which the dancers wear masks.
  • Masked battery (Mil.), a battery so placed as not to be seen by an enemy until it opens fire. --H. L. Scott.
  • Masked crab (Zool.), a European crab ({Corystes cassivelaunus}) with markings on the carapace somewhat resembling a human face.
  • Masked pig (Zool.), a Japanese domestic hog ({Sus pliciceps}). Its face is deeply furrowed. [1913 Webster]