Source : Webster's Revised Unabridged Dictionary (1913)

Midge \Midge\, n. [OE. migge, AS. mycge; akin to OS. muggia, D.
   mug, G. m["u]cke, OHG. mucca, Icel. m?, Sw. mygga, mygg, Dan.
   myg; perh. named from its buzzing; cf. Gr. ? to low, bellow.]
   (Zo["o]l.)
   1. Any one of many small, delicate, long-legged flies of the
      {Chironomus}, and allied genera, which do not bite. Their
      larv[ae] are usually aquatic.

   2. A very small fly, abundant in many parts of the United
      States and Canada, noted for the irritating quality of its
      bite.

   Note: The name is also applied to various other small flies.
         See {Wheat midge}, under {Wheat}.

Source : WordNet®

midge
     n : minute two-winged mosquito-like fly lacking biting
         mouthparts; appear in dancing swarms especially near
         water