 Pumpkin pie, for instance, is a traditional part of Thanksgiving meals in Canada and the United States, and pumpkins are frequently carved as jack-o'-lanterns for decoration around Halloween, although commercially canned pumpkin purée and pumpkin pie fillings are usually made from different kinds of winter squash than the ones used for jack-o'-lanterns.The word "pumpkin" originates from the word "pepon" (πέπων), which is Greek for "large melon", something round and large.The French adapted this word to "pompon", which the British changed to "pumpion" and to the later American colonists became known as "pumpkin".