A large flat surface, finished with black slate or a similar material, that can be written upon with chalk and subsequently erased; a chalkboard.
To use a blackboard to assist in an informal discussion.
Any long established and respected place or business.
The act of instituting something.
A custom or practice of a society or community.
The building or buildings which house such an organization.
A person long established in a place, position, or field.
A mental institution.
A long established and respected organization, particularly one involved with education, public service, or charity work.
The act by which a bishop commits a cure of souls to a priest.