'Res judicata' definitions:

Definition of 'res judicata'

(from WordNet)
noun
A matter already settled in court; cannot be raised again [syn: res judicata, res adjudicata]

Definition of 'Res judicata'

From: GCIDE
  • Res \Res\ (r?z), n.; pl. Res. [L.] A thing; the particular thing; a matter; a point. [1913 Webster]
  • Res gestae [L., things done] (Law), the facts which form the environment of a litigated issue. --Wharton.
  • Res judicata [L.] (Law), a thing adjudicated; a matter no longer open to controversy. [1913 Webster]