Gear  —n. 1 (often in pl.) A set of toothed wheels that work together, esp. Those connecting the engine of a vehicle to the road wheels. B particular setting of these (first gear). 2 equipment, apparatus, or tackle. 3 colloq. Clothing. —v. 1 (foll. By to) adjust or adapt to. 2 (often foll. By up) equip with gears. 3 (foll. By up) make ready or prepared. 4 put in gear.  in gear with a gear engaged. Out of gear with no gear engaged. [old norse]