The term 'La Brea' refers to the La Brea Tar Pits, a group of tar pits located in Los Angeles, California. The pits are filled with asphalt, which is a type of petroleum that seeps up from the ground. The tar pits have been around for thousands of years and are a popular tourist attraction. The crossword solution for the term 'La Brea' is 'PITS, ' which is an accurate description of the tar pits.