1. schools or institutions of higher learning, especially those specializing in particular subjects
2. organizations of distinguished scholars, artists, or scientists that aim to promote and maintain standards in their particular field

Examples

• The military academies train future officers for the armed forces.
• She attended one of the most prestigious art academies in the country.
• Police academies provide rigorous training for new recruits.
• The national academies of science advise the government on technical matters.
• Many charter schools call themselves academies to emphasize academic excellence.
• The Royal Academy and similar academies have influenced artistic standards for centuries.
• Dance academies often begin training students at a very young age.