Source : Webster's Revised Unabridged Dictionary (1913)

Tithingman \Tith"ing*man\, n.; pl. {Tithingmen}.
   1. (O. Eng. Law) The chief man of a tithing; a headborough;
      one elected to preside over the tithing.

   2. (Law) A peace officer; an under constable.

   3. A parish officer elected annually to preserve good order
      in the church during divine service, to make complaint of
      any disorderly conduct, and to enforce the observance of
      the Sabbath. [Local, U. S.]