资料来源 : Webster's Revised Unabridged Dictionary (1913)

Gear \Gear\v. t. [imp. & p. p. {Geared}; p. pr. & vb. n.
   {Gearing}.]
   1. To dress; to put gear on; to harness.

   2. (Mach.) To provide with gearing.

   {Double geared}, driven through twofold compound gearing, to
      increase the force or speed; -- said of a machine.