Guacamole is an avocado-based dip that's served with tortilla chips at Mexican restaurants. You can often also order your burrito or taco with extra guacamole.
Guacamole dates from at least the 1500s, when it was made by the Aztecs in Mexico. Guacamole is a Spanish word that's based on the Aztec language Nahuatl's ahuaca-molli, a combination of ahuacatl, "avocado," and molli, "sauce." In the United States, guacamole has surged in popularity over the last several decades, with avocados especially in demand right before Super Bowl Sunday and Cinco de Mayo.