1. [n]  (folklore) fairies that are somewhat mischievous
2. [n]  one who is playfully mischievous

1. \Imp\, n. [OE. imp a graft, AS. impa; akin to Dan. ympe, Sw.
   ymp, prob. fr. LL. impotus, Gr. ? engrafted, innate, fr. ? to
   implant; ? in + ? to produce; akin to E. be. See 1st {In-},
   {Be}.]
   1. A shoot; a scion; a bud; a slip; a graft. [Obs.]
      --Chaucer.
   
   2. An offspring; progeny; child; scion. [Obs.]
   
            The tender imp was weaned.            --Fairfax.
   
   3. A young or inferior devil; a little, malignant spirit; a
      puny demon; a contemptible evil worker.
   
            To mingle in the clamorous fray Of squabbling imps.
                                                  --Beattie.
   
   4. Something added to, or united with, another, to lengthen
      it out or repair it, -- as, an addition to a beehive; a
      feather inserted in a broken wing of a bird; a length of
      twisted hair in a fishing line. [Obs. or Prov. Eng.]
   
   

2. \Imp\, v. t. [imp. & p. p. {Imped}; p. pr. & vb. n.
   {Imping}.] [AS. impian to imp, ingraft, plant; akin to Dan.
   ympe, Sw. ympa, OHG. impf[=o]n, impit[=o]n, G. impfen. See
   {Imp}, n.]
   1. To graft; to insert as a scion. [Obs.] --Rom. of R.
   
   2. (Falconry) To graft with new feathers, as a wing; to
      splice a broken feather. Hence, Fig.: To repair; to
      extend; to increase; to strengthen to equip. [Archaic]
   
            Imp out our drooping country's broken wing. --Shak.
   
            Who lazily imp their wings with other men's plumes.
                                                  --Fuller.
   
            Here no frail Muse shall imp her crippled wing.
                                                  --Holmes.
   
            Help, ye tart satirists, to imp my rage With all the
            scorpions that should whip this age.  --Cleveland.
   
   

1. improved mercury autocode.

2. An extensible dialect of algol 60, for cdc 1604.

["Experience with an Extensible Language", Edgar T. Irons, CACM 13(1):31-39, Jan 1970].

3. interpretive menu processor.

4. implementation language.

5. interface message processor.