through bolt

Through \Through\, a.
   Going or extending through; going, extending, or serving from
   the beginning to the end; thorough; complete; as, a through
   line; a through ticket; a through train. Also, admitting of
   passage through; as, a through bridge.
   [1913 Webster]

   {Through bolt}, a bolt which passes through all the thickness
      or layers of that which it fastens, or in which it is
      fixed.

   {Through bridge}, a bridge in which the floor is supported by
      the lower chords of the tissues instead of the upper, so
      that travel is between the trusses and not over them. Cf.
      {Deck bridge}, under {Deck}.

   {Through cold}, a deep-seated cold. [Obs.] --Holland.

   {Through stone}, a flat gravestone. [Scot.] [Written also
      {through stane}.] --Sir W. Scott.

   {Through ticket}, a ticket for the whole journey.

   {Through train}, a train which goes the whole length of a
      railway, or of a long route.
      [1913 Webster]