资料来源 : Webster's Revised Unabridged Dictionary (1913)

Troll \Troll\, n.
   1. The act of moving round; routine; repetition. --Burke.

   2. A song the parts of which are sung in succession; a catch;
      a round.

            Thence the catch and troll, while ``Laughter,
            holding both his sides,'' sheds tears to song and
            ballad pathetic on the woes of married life. --Prof.
                                                  Wilson.

   3. A trolley.

   {Troll plate} (Mach.), a rotative disk with spiral ribs or
      grooves, by which several pieces, as the jaws of a chuck,
      can be brought together or spread radially.