"Board vacancies" refers to positions or seats that are available on a governing board or committee. It means there are open spots for people to join and contribute to the decision-making and leadership of an organization. Full definition
Look around your city or town for organizations looking to fill board vacancies. (lawyerist.com)
The Trump administration's economic team is beginning to take shape, but we still don't have nominees for two Federal Reserve Board vacancies. (mauldineconomics.com)
The governor shall fill board vacancies by appointment. (sbnation.com)