The Collaborative International Dictionary of English v.0.48:

Fold \Fold\, n. [OE. fald, fold, AS. fald, falod.]
   1. An inclosure for sheep; a sheep pen.
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            Leaps o'er the fence with ease into the fold.
                                                  --Milton.
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   2. A flock of sheep; figuratively, the Church or a church;
      as, Christ's fold.
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            There shall be one fold and one shepherd. --John x.
                                                  16.
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            The very whitest lamb in all my fold. --Tennyson.
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   3. A boundary; a limit. [Obs.] --Creech.
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   Fold yard, an inclosure for sheep or cattle.
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