Source : Webster's Revised Unabridged Dictionary (1913)

Droll \Droll\, n.
   1. One whose practice it is to raise mirth by odd tricks; a
      jester; a buffoon; a merry-andrew. --Prior.

   2. Something exhibited to raise mirth or sport, as a puppet,
      a farce, and the like.

Droll \Droll\, a. [Compar. {Droller}; superl. {Drollest}.] [F.
   dr[^o]le; cf. G. & D. drollig, LG. drullig, D. drol a thick
   and short person, a droll, Sw. troll a magical appearance,
   demon, trolla to use magic arts, enchant, Dan. trold elf,
   imp, Icel. tr["o]ll giant, magician, evil spirit, monster. If
   this is the origin, cf. {Trull}.]
   Queer, and fitted to provoke laughter; ludicrous from oddity;
   amusing and strange.

   Syn: Comic; comical; farcical; diverting; humorous;
        ridiculous; queer; odd; waggish; facetious; merry;
        laughable; ludicrous. -- {Droll}, {Laughable},
        {Comical}. Laughable is the generic term, denoting
        anything exciting laughter or worthy of laughter;
        comical denotes something of the kind exhibited in
        comedies, something humorous of the kind exhibited in
        comedies, something, as it were, dramatically humorous;
        droll stands lower on the scale, having reference to
        persons or things which excite laughter by their
        buffoonery or oddity. A laughable incident; a comical
        adventure; a droll story.

Droll \Droll\, v. i. [imp. & p. p. {Drolled}; p. pr. & vb. n.
   {Drolling}.]
   To jest; to play the buffoon. [R.]

Droll \Droll\, v. t.
   1. To lead or influence by jest or trick; to banter or jest;
      to cajole.

            Men that will not be reasoned into their senses, may
            yet be laughed or drolled into them.  --L'Estrange.

   2. To make a jest of; to set in a comical light. [R.]

            This drolling everything is rather fatiguing. -- W.
                                                  D. Howells.

Source : WordNet®

droll
     adj : comical in an odd or whimsical manner; "a droll little man
           with a quiet tongue-in-cheek kind of humor"