The Collaborative International Dictionary of English v.0.48:

Daemon \D[ae]"mon\, n., Daemonic \D[ae]*mon"ic\, a.
   See Demon, Demonic.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Demon \De"mon\, n. [F. d['e]mon, L. daemon a spirit, an evil
   spirit, fr. Gr. dai`mwn a divinity; of uncertain origin.]
   1. (Gr. Antiq.) A spirit, or immaterial being, holding a
      middle place between men and deities in pagan mythology.
      [1913 Webster]

            The demon kind is of an intermediate nature between
            the divine and the human.             --Sydenham.
      [1913 Webster]

   2. One's genius; a tutelary spirit or internal voice; as, the
      demon of Socrates. [Often written d[ae]mon.]
      [1913 Webster]

   3. An evil spirit; a devil.
      [1913 Webster]

            That same demon that hath gulled thee thus. --Shak.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "daemon":
   Geist, Muse, afflatus, ancestral spirits, angel, attendant godling,
   atua, control, creative thought, creativity, daimonion, demon,
   divine afflatus, evil spirits, fairy godmother, familiar,
   familiar spirit, fire of genius, genius, genius domus, genius loci,
   good angel, good genius, guardian, guardian angel, guardian spirit,
   guide, household gods, inspiration, intelligence, invisible helper,
   lares and penates, lares compitales, lares familiaris,
   lares permarini, lares praestites, lares viales, manes,
   ministering angel, numen, penates, soul, special providence,
   specter, spirit, supernatural being, talent, totem, tutelar god,
   tutelary



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DAEMON
       Disk And Execution MONitor (Unix)


Easton's 1897 Bible Dictionary:

Daemon
   the Greek form, rendered "devil" in the Authorized Version of
   the New Testament. Daemons are spoken of as spiritual beings
   (Matt. 8:16; 10:1; 12:43-45) at enmity with God, and as having a
   certain power over man (James 2:19; Rev. 16:14). They recognize
   our Lord as the Son of God (Matt. 8:20; Luke 4:41). They belong
   to the number of those angels that "kept not their first
   estate," "unclean spirits," "fallen angels," the angels of the
   devil (Matt. 25:41; Rev. 12:7-9). They are the "principalities
   and powers" against which we must "wrestle" (Eph. 6:12).