n (Canada, US) An institution dedicated to teaching and learning; an educational institution.
n (Britain) An educational institution providing primary and secondary education, prior to tertiary education (college or university).
n (UK) At Eton College, a period or session of teaching.
n Within a larger educational institution, an organizational unit, such as a department or institute, which is dedicated to a specific subject area.
n An art movement, a community of artists.
n (considered collectively) The followers of a particular doctrine; a particular way of thinking or particular doctrine; a school of thought.
n The time during which classes are attended or in session in an educational institution.
n The room or hall in English universities where the examinations for degrees and honours are held.
n The canons, precepts, or body of opinion or practice, sanctioned by the authority of a particular class or age.
n An establishment offering specialized instruction, as for driving, cooking, typing, coding, etc.
v (transitive) To educate, teach, or train (often, but not necessarily, in a school).
v (transitive) To defeat emphatically, to teach an opponent a harsh lesson.
v (transitive) To control, or compose, one’s expression.
n (collective) A group of fish or a group of marine mammals such as porpoises, dolphins, or whales.
n A multitude.
v (intransitive, of fish) To form into, or travel in, a school.