gear

gear 1

•  noun

1    [C,U] the gears are the equipment in a car or other vehicle that turns power from the engine into movement:

?The car has five gears.
?change gear (= change to a different gear) Every time I change gear the car makes a horrible noise.
2    [U] special equipment, clothing etc that you need for a particular activity:
?camping gear

gear 2

• verb [T]

1    be geared to to be organized in order to achieve a particular purpose:
?All his training was geared to winning an Olympic gold medal.
2    be geared up to be prepared for a situation or to do a particular activity:
?He arrived all geared up for trouble.