Vegetable marrow :
The plant species Cucurbita pepo, which produces long, cylindrical fruits. These are usually green but may also be yellow, white, or striped. Like their relatives melons and cucumbers, they are climbing or trailing annuals, with large, prickly leaves and stems. In North America these fruits are known as summer squashes, and include the American pumpkin. They originated in tropical America and are now grown all over the world as a vegetable. Other varieties of C. pepo include ornamental gourds, and those with fruit used when young as courgettes, which are also known as zucchini.
Trifle is a confection of layers of cake alternating with whipped cream and fruit, topped with custard. There are many different recipes, I seem to remember my mother incorporated jelly (=US Jello) into her trifle.