The Collaborative International Dictionary
christophene
Chayote \Cha"yo"te\
a tropical West Indian vine ( Sechium edule) of the gourd family, which bears small white flowers and produces an edible fruit.
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
Wiktionary
christophene
n. (alternative form of christophine English)