Source : Webster's Revised Unabridged Dictionary (1913)

Mop \Mop\, n. [CF. W. mop, mopa, Ir. moipal, Gael. moibeal,
   moibean; or OF. mappe a napkin (see {Map}, {Napkin}).]
   1. An implement for washing floors, or the like, made of a
      piece of cloth, or a collection of thrums, or coarse yarn,
      fastened to a handle.

   2. A fair where servants are hired. [Prov. Eng.]

   3. The young of any animal; also, a young girl; a moppet.
      [Prov. Eng.] --Halliwell.

   {Mop head}.
      (a) The end of a mop, to which the thrums or rags are
          fastened.
      (b) A clamp for holding the thrums or rags of a mop.
          [U.S.]