1.Definition: (set theory) of an interval that contains both its endpoints
2.Definition: blocked against entry
"A closed porch"
3.Definition: not having an open mind
"A closed mind unreceptive to new ideas"
5.Definition: not open or affording passage or access
"The many closed streets made travel difficult", "Our neighbors peeped from behind closed curtains"
6.Definition: not open to the general public
"A closed meeting"
7.Definition: requiring union membership
"A closed shop"
8.Definition: used especially of mouth or eyes
"He sat quietly with closed eyes"
9.Definition: with shutters closed