/ ɪnˈkləʊʒə(r); NAmE -ˈkloʊ-/ noun
1.
[ C ] a piece of land that is surrounded by a fence or wall and is used for a particular purpose :
a wildlife enclosure
2.
[ U , C ] the act of placing a fence or wall around a piece of land :
the enclosure of common land in the seventeenth century
3.
[ C ] something that is placed in an envelope with a letter
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WORD ORIGIN
late Middle English : from legal Anglo-Norman French and Old French , from enclos closed in, past participle of enclore , based on Latin includere shut in.