The Collaborative International Dictionary of English v.0.48:

Argus \Ar"gus\, prop. n. [L. Argus, Gr. ?.]
   1. (Myth.) A fabulous being of antiquity, said to have had a
      hundred eyes, who has placed by Juno to guard Io. His eyes
      were transplanted to the peacock's tail.
      [1913 Webster]

   2. One very vigilant; a guardian always watchful.
      [1913 Webster]

   3. (Zool.) A genus of East Indian pheasants. The common
      species (Argus giganteus) is remarkable for the great
      length and beauty of the wing and tail feathers of the
      male. The species Argus Grayi inhabits Borneo.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Argus
    n 1: (Greek mythology) a giant with 100 eyes; was guardian of
         the heifer Io and was slain by Hermes
    2: large brilliantly patterned East Indian pheasant [syn:
       argus, argus pheasant]

The Free On-line Dictionary of Computing (30 December 2018):

Argus

    A successor to CLU, from LCS at MIT.  Argus
   supports distributed programming through guardians (like
   monitors, but can be created dynamically) and atomic
   actions (indivisible activity).  It also has cobegin and
   coend.

   ["Argus Reference Manual", B. Liskov et al., TR-400, MIT/LCS,
   1987].

   ["Guardians and Actions: Linguistic Support for Robust,
   Distributed Programs", B. Liskov  et al,
   TOPLAS 5(3):381-404 (1983)].

   (1995-12-28)