\Ax"le box`\
1. A bushing in the hub of a wheel, through which the axle
   passes.

2. The journal box of a rotating axle, especially a railway
   axle.

Note: In railway construction, the axle guard, or pedestal,
      with the superincumbent weight, rests on the top of the
      box (usually with a spring intervening), and holds it
      in place by flanges. The box rests upon the journal
      bearing and key, which intervene between the inner top
      of the box and the axle.