Source : Webster's Revised Unabridged Dictionary (1913)

Bolt \Bolt\, v. t. [imp. & p. p. {Bolted}; p. pr. & vb. n.
   {Bolting}.] [OE. bolten, boulten, OF. buleter, F. bluter, fr.
   Ll. buletare, buratare, cf. F. bure coarse woolen stuff; fr.
   L. burrus red. See {Borrel}, and cf. {Bultel}.]
   1. To sift or separate the coarser from the finer particles
      of, as bran from flour, by means of a bolter; to separate,
      assort, refine, or purify by other means.

            He now had bolted all the flour.      --Spenser.

            Ill schooled in bolted language.      --Shak.

   2. To separate, as if by sifting or bolting; -- with out.

            Time and nature will bolt out the truth of things.
                                                  --L'Estrange.

   3. (Law) To discuss or argue privately, and for practice, as
      cases at law. --Jacob.

   {To bolt to the bran}, to examine thoroughly, so as to
      separate or discover everything important. --Chaucer.

            This bolts the matter fairly to the bran. --Harte.

            The report of the committee was examined and sifted
            and bolted to the bran.               --Burke.