en ‧ clo ‧ sure /ɪnˈkləʊʒə $ -ˈkloʊʒər/ BrE AmE noun
1 . [countable] an area surrounded by a wall or fence, and used for a particular purpose:
the bear enclosure at the zoo
2 . [uncountable] the act of making an area separate by putting a wall or fence around it:
the enclosure of arable land for pasture
3 . [countable] something that is put inside an envelope with a letter