To prohibit (a person or company that has been convicted of criminal acts in connection with a government program) from future participation in that program.
To exclude or shut out; to bar.
To hinder or prevent.
To ban a person from a city for five or ten years through the procedure of ostracism.
To exclude a person from a community or from society by not communicating with them or by refusing to acknowledge their presence; to refuse to associate with or talk to; to shun.