D defs.my
Entry 2 senses Webster, 1913

Axle box

/ăk'-səl bäks/ · Ax·le box · IPA
01 A bushing in the hub of a wheel, through which the axle passes.
  1. 1.
    A bushing in the hub of a wheel, through which the axle passes.
  2. 2.
    The journal box of a rotating axle, especially a railway axle.