The Collaborative International Dictionary of English v.0.48:

Ariel \A"ri*el\, n., or Ariel gazelle \A"ri*el ga*zelle"\ [Ar.
   aryil, ayyil, stag.] (Zool.)
   (a) A variety of the gazelle (Antilope dorcas, or Gazella,
       dorcas), found in Arabia and adjacent countries.
   (b) A squirrel-like Australian marsupial, a species of
       Petaurus.
   (c) A beautiful Brazilian toucan Ramphastos ariel).
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ariel \A"ri*el\, n. [Heb. ari["e]l, perh. confused with E.
   a["e]rial.]
   In the Cabala, a water spirit; in later folklore, a light and
   graceful spirit of the air.
   [Webster 1913 Suppl.]

   Note: In Zoology, ariel is used adjectively of certain birds
         noted for their graceful flight; as, the ariel toucan;
         the ariel petrel.
         [Webster 1913 Suppl.]

Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "Ariel":
   Befind, Corrigan, Finnbeara, Mab, Oberon, Titania, banshee,
   brownie, cluricaune, dwarf, elf, fairy, fairy queen, fay, gnome,
   goblin, gremlin, hob, imp, kobold, leprechaun, ouphe, peri, pixie,
   pooka, puca, pwca, sprite, sylph, sylphid



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

Ariel

    An array-oriented language for the CDC 6400.

   ["Ariel Reference Manual", P. Devel, TR 22, CC UC Berkeley,
   Apr 1968].

   ["A New Survey of the Ariel Programming Language", P. Deuel,
   TR 4, Ariel Consortium, UC Berkeley, June 1972].

   [Deuel or Devel?]

   (1995-12-29)


Easton's 1897 Bible Dictionary:

Ariel
   the lion of God. (1.) One of the chief men sent by Ezra to
   procure Levites for the sanctuary (Ezra 8:16).

     (2.) A symbolic name for Jerusalem (Isa. 29:1, 2, 7) as
   "victorious under God," and in Ezek. 43:15, 16, for the altar
   (marg., Heb. 'ariel) of burnt offerings, the secret of Israel's
   lion-like strength.


Hitchcock's Bible Names Dictionary (late 1800's):

Ariel, altar; light or lion of God