To prohibit a person or company that has been convicted of criminal acts in connection with an application for approval of a new drug from participating in future applications
If you are debarred from doing something, you are prevented from doing it by a law or regulation. If found guilty, she could be debarred from politics for seven years = ban. to officially prevent someone from doing something = ban debar sb from (doing) sth
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