O’Block (slang) Type: noun, slang Pronunciation: /oh-block/ Also spelled: O block, O-block Related: GBE What does O’Block mean? A neighborhood in Chicago, IL; The 0600 block. O’Block Synonyms: The O, Chiraq, The Chi, Killinois Similar to O’Block: The Hood, The Ghetto Coined by: Odee Perry O’Block Origin: The name O’Block comes from late 20-year-old gang […]