(mechanical engineering) A kind of gear in which the two wheels working together lie in different planes and have their teeth cut at right angles to the surfaces of two cones whose apices coincide with the point where the axes of the wheels would meet.

(engineering) A spur gearing having teeth slanting across the face of the wheel, sometimes slanting in opposite directions from the middle.

A cogwheel or pinion having flanges which form closed ends to the spaces between the teeth and thus strengthen the teeth by tying them together.

(finance) A form of leveraged speculation in which a speculator borrows money to buy an asset, but the income generated by that asset does not cover the interest on the loan

(automotive) The wheels, suspension, steering, powertrain and usually the chassis of a motor vehicle.

(informal, derogatory) The lowest gear on a vehicle.

(nautical) Any material, usually rope or canvas, used to protect sails, rigging, etc., at points where they are exposed to friction.

(engineering, of a machine) Driven through twofold compound gearing, to increase the force or speed.

(engineering) A piece for receiving or communicating reciprocating motion from or to a cogwheel, consisting of a sector of a circular gear, or ring, having cogs on the periphery, or face.

With gears not engaged; idle. / Out of control; in disarray.