A British dish of equal parts mashed potatoes and chopped cooked cabbage mixed together and fried until well browned. Originally, the dish included chopped boiled beef. The name is said to come from the sounds the potato-cabbage mixture makes as it cooks (some say it's from the sounds one's stomach makes after eating bubble and squeak).
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.