/ˈkɑːŋɡrɪɡeɪt/

con·gre·gate

BrE /ˈkɒŋɡrɪɡeɪt/

NAmE /ˈkɑːŋɡrɪɡeɪt/

[I]

to come together in a group

Young people often congregate in the main square in the evenings.