Definition of closures:
(n) :
An event or occurrence that signifies an ending.
(n) :
(figurative) A feeling of completeness; the experience of an emotional conclusion, usually to a difficult period.
(n) :
The act of shutting; a closing.
(n) :
The act of shutting or closing something permanently or temporarily.
(n) :
A device to facilitate temporary and repeatable opening and closing.
(n) :
That which closes or shuts; that by which separate parts are fastened or closed.