(US, dated) Expression of surprise or annoyance, now usually equivalent to "Why should I care?"; so what?

very good, impressive.

An assembly of meshed gears consisting of a central (sun) gear, a coaxial internal gear-wheel and one or more intermediate pinions supported on a revolving carrier.

A member of the gendarmerie, a military body charged with police duties. / A policeman. / A rock pinnacle on a mountain ridge.

a sturdy pole, lashed to the side of a sled, and used for steering and support

A hairstyling product in gel form that hardens the hair, so it stays in a certain hairstyle.

(mechanical engineering) A system of interconnected gears.

Alternative spelling of gearstick

Synonym of interrupter gear

A triggering device attached to the machine gun armament of fighter aircraft so that the gun could fire through the arc of a spinning propeller without the bullets striking the blades.