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.

Note: In zo["o]logy, ariel is used adjectively of certain birds noted for their graceful flight; as, the ariel toucan; the ariel petrel.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Ariel \A"ri*el\, n., or Ariel gazelle \A"ri*el ga*zelle"\ [Ar. aryil, ayyil, stag.]

(Zo["o]l.)
   (a) A variety of the gazelle (Antilope, 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).

Source: Webster's Revised Unabridged Dictionary (1913)