Descend on Definition 1 of 3Pro Tip 1/3Large Groups Used when emphasizing the overwhelming number of people or things arriving. Birds descend on the feeder during winter. Pro Tip 2/3Impromptu Events Implies an unexpected or sudden gathering at a location. Crowds descend on the park for the surprise concert. Pro Tip 3/3Potential Overcrowding Can suggest a place gets very crowded and busy. Shoppers descend on the mall for the Black Friday sales.