Definition of "Closed" :

adjective: not open

adjective: not open or affording passage or access

"The many closed streets made travel difficult."

adjective: used especially of mouth or eyes

"He sat quietly with closed eyes."

adjective: blocked against entry

"A closed porch."

adjective: (set theory) of an interval that contains both its endpoints

adjective: not having an open mind

"A closed mind unreceptive to new ideas."

adjective: not open to the general public

"A closed meeting."

adjective: with shutters closed

adjective: requiring union membership

"A closed shop."