Source : Webster's Revised Unabridged Dictionary (1913)

Infold \In*fold"\ (?n-f?ld"), v. t. [imp. & p. p. {Infolded}; p.
   pr. & vb. n. {Infolding}.] [Pref. in- in + fold.] [Written
   also {enfold}.]
   1. To wrap up or cover with folds; to envelop; to inwrap; to
      inclose; to involve.

            Gilded tombs do worms infold.         --Shak.

            Infold his limbs in bands.            --Blackmore.

   2. To clasp with the arms; to embrace.

            Noble Banquo, . . . let me infold thee, And hold
            thee to my heart.                     --Shak.

Source : WordNet®

infolding
     n : the folding in of an outer layer so as to form a pocket in
         the surface; "the invagination of the blastula" [syn: {invagination},
          {introversion}, {intussusception}]