1. Not having gears engaged
   "threw the machine's pinion out of gear"

See also: ungeared

• Battle of the Marne
• battle of the Philippine Sea
• Battle of the Somme
• Battle of the Spanish Armada
• battle of Thermopylae
• battle of Trafalgar
• battle of Trasimeno
• battle of Valmy
• battle of Verdun
• battle of Wagram
• Battle of Wake
• Battle of Wake Island
• Battle of Waterloo
• battle of wits
• battle of Ypres
• battle of Zama
• battle plan
• battle royal
• battle-ax
• battle-axe
• battle-scarred
• battledore
• battledore and shuttlecock
• battlefield
• battlefront