n.

1. 制度，习俗[C]
   The institution of slavery was once widespread.

   奴隶制度曾经相当普遍。

2. 公共团体，机构；公共团体的建筑物[C]
   A church, school, hospital, asylum, or prison is an institution.

   教堂、学校、医院、收容所或监狱皆属公共机构。

3. 建立，设立，制定[U]
   Institution of such schools was geared to these needs.

   建立这些学校适应了那些需要。

n.

1. a large organization founded for a particular purpose, such as a college, bank, etc.
   ▸an organization providing residential care for people with special needs.
   ▸an official organization with an important role in a country.
2. an established law or custom.
   ▸informal a well-established and familiar person or thing:

   he became a national institution.
3. the action of instituting.