Source : Webster's Revised Unabridged Dictionary (1913)

Moonlight \Moon`light`\, n.
   The light of the moon. -- a. Occurring during or by
   moonlight; characterized by moonlight.

Source : WordNet®

moonlight
     n : the light of the moon; "moonlight is the smuggler's enemy";
         "the moon was bright enough to read by" [syn: {moonshine},
          {moon}]
     v : work a second job, usually after hours; "The law student is
         moonlighting as a taxi driver"