Source : Webster's Revised Unabridged Dictionary (1913)

Undertaker \Un`der*tak"er\, n.
   1. One who undertakes; one who engages in any project or
      business. --Beau. & Fl.

   2. One who stipulates or covenants to perform any work for
      another; a contractor.

            To sign deputations for undertakes to furnish their
            proportions of saltpeter.             --Evelyn.

            In come some other undertakes, and promise us the
            same or greater wonders.              --South.

   3. Specifically, one who takes the charge and management of
      funerals.

Source : WordNet®

undertaker
     n : one whose business is the management of funerals [syn: {mortician},
          {funeral undertaker}, {funeral director}]