The Collaborative International Dictionary of English v.0.48:

Mirliton \Mir"li*ton\, n. [F.]
   1. A kind of musical toy into which one sings, hums, or
      speaks, producing a coarse, reedy sound. It is also called
      a kazoo.
      [Webster 1913 Suppl. +PJC]

            Trilby singing "Ben Bolt" into a mirliton was a
            thing to be remembered, whether one would or no!
                                                  --Du Maurier.
      [Webster 1913 Suppl.]

   2. same as chayote[2].
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Chayote \Cha"yo"te\
   1. a tropical West Indian vine (Sechium edule) of the gourd
      family, which bears small white flowers and produces an
      edible fruit.
      [PJC]

   2. the edible fruit of the chayote[1] vine, having a pear
      shape with a furrowed skin, and usually green or white. It
      is also called choyote, christophene, mirliton, and
      vegetable pear
      [PJC]