To cut off from entrance, as if by a bar or barrier; to preclude; to hinder from approach, entry, or enjoyment; to shut out or exclude; to deny or refuse; -- with from, and sometimes with of.
means to prohibit a person from participating in any competition or other activities ides directed, sanctioned, sponsored or authorized by The Canadian Kennel Club if held under its auspices or under any of its rules and regulations.
bar temporarily; from school, office, etc.