A directorship is the position of being a director of a company or organization — a seat on the board, the job itself rather than the person. People say someone “took up a directorship” or “holds several directorships.” You can also mean the stretch of time: during her directorship, the museum grew. In places like the UK, company directors have legal duties, so a directorship is not just a pretty title; it is an office with rules. Though actually, it does not automatically mean the chair of the board. A director is one of the people who help run the company; the chair is a further, special seat. Newspapers use the word in business pages; everyday chat may just say “she’s on the board.”