Eudaemon, ŏnis, com., = Εὐδαίμων (fortunate),
the Greek appellation of the southern part of Arabia ( Arabia Felix ), Mel. 3, 8, 6; Plin. 6, 27, 31, § 138; Sol. 33, 4; and of its inhabitants , Vop. Aurel. 33; Capitol. Macr. 12.
·noun A good angel. ...
Webster's Dictionary of the English Language