Source : Webster's Revised Unabridged Dictionary (1913)

Fold \Fold\, n. [OE. fald, fold, AS. fald, falod.]
   1. An inclosure for sheep; a sheep pen.

            Leaps o'er the fence with ease into the fold.
                                                  --Milton.

   2. A flock of sheep; figuratively, the Church or a church;
      as, Christ's fold.

            There shall be one fold and one shepherd. --John x.
                                                  16.

            The very whitest lamb in all my fold. --Tennyson.

   3. A boundary; a limit. [Obs.] --Creech.

   {Fold yard}, an inclosure for sheep or cattle.