WordNet sense 1 (any of a variety of muskmelon vines having fruit with a smooth white rind and white or greenish flesh that does not have a musky smell):

winter melon, Persian melon, Cucumis melo inodorus, winter melon vine

WordNet sense 2 (the fruit of a variety of winter melon vine; a large smooth greenish-white melon with pale green flesh):

honeydew