Meaning of OSTRACIZE in English

os ‧ tra ‧ cize BrE AmE ( also ostracise British English ) /ˈɒstrəsaɪz $ ˈɑː-/ verb [transitive]

[ Date: 1800-1900 ; Language: Greek ; Origin: ostrakizein 'to send away by voting with broken pieces of pot' , from ostrakon 'broken piece of pot' ]

if a group of people ostracize someone, they refuse to accept them as a member of the group:

She was afraid that if she spoke up her colleagues would ostracize her.

He was ostracized by the other students.

—ostracism /-sɪz ə m/ noun [uncountable] :

He suffered years of ostracism.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.