early 14c., from en- (1) + close, and partially from Old French enclos, past participle of enclore "surround; confine; contain." Specific sense of "to fence in waste or common ground" for the purpose of cultivation or to give it to private owners is from c. 1500. Meaning "place a document with a letter for transmission" is from 1707. Related: Enclosed; enclosing.[enclose etymology, enclose origin, 英语词源]
"The legal right to cut turf or peat for fuel on common ground or on another person’s ground", Late Middle English: from Anglo-Norman French turberie, from Old French tourbe 'turf'.