n.

1. 围住，封入[U]
   The enclosure of public land meant that ordinary people couldn't use it.

   公共土地的圈围意味着普通人将不能使用它。

2. 圈地；围场[C]
   There is a public enclosure of a racecourse.

   那儿有个作赛马场的公共圈地。

3. 围栏，围墙[C]
4. （信函的）附件[C]
   I received a letter with three enclosures.

   我收到一封有三份附件的信。

n.

1. an area that is sealed off by a barrier.
   ▸Brit. a section of a racecourse or stadium allocated to a particular group:

   the members' enclosure.
2. a document or object placed in an envelope together with a letter.
3. the process or policy of enclosing common land so as to make it private property, as carried out in much of Britain in the 18th and early 19th centuries.