From Longman Dictionary of Contemporary Englishcongregatecon‧gre‧gate /ˈkɒŋɡrɪɡeɪt $ ˈkɑːŋ-/ verb [intransitive] CROWDto come together in a group OPP disperse Crowds began to congregate to hear the president’s speech.→ See Verb table
Examples from the Corpus
congregate• They multiply rapidly if ignored, however, and form an unattractive brown film wherever they congregate.• Canals already are fished by sneaky devils, who learn where fish congregate.• Those that drive down usually congregate around two pubs near the ground.• Marchers were due to congregate at Market Square for an open-air meeting.• Is your kitchen the sort of place where family and friends congregate for chats as a matter of course.• Many insects have particular types of place where they congregate for mating.• The four girls had congregated in her room.• There is more than one way in which animals can congregate in the dark, or in the light.• They congregate off campus before and after school and during lunch, hoping not to get busted by passing teachers and administrators.• Insects tend to congregate on the underside of leaves.• On Friday evening, teenagers congregate outside the bars on Greene Street.Origin congregate (1400-1500) Latin past participle of congregare, from com- ( → COM-) + grex “crowd” 