overspill
🇺🇸
/ˈəʊvərspɪl/
🇬🇧
/ˈəʊvəspɪl/
When people move from a crowded place to a less crowded one because there's not enough space.
The park was so popular that there was an overspill of visitors into the neighboring streets.
その公園はとても人気があり、近隣の通りに訪問者が溢れ出ていました。