chayote

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

 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]