en·clo·sure 
(ĕn-klōzhər)
(ĕn-klōzhər)n.
1.
a. The act of enclosing.
b. The state of being enclosed.
2. Something enclosed: a business letter with a supplemental enclosure.
3. Something that encloses.
- open-end investment company
- open-end wrench
- open enrollment
- opener
- open-eyed
- open eyes
- open-faced
- open fire
- openhanded
- openhandedly
- openhandedness
- openhearted
- openheartedly
- openheartedness
- open-hearth
- open-heart surgery
- open house
- opening
- open interval
- open-label
- open letter
- open listing
- open loop
- openly
- open market