• Arm (oneself) against (something)
• Arm (oneself) with resources
• Arm (someone) for action
• Arm (someone) for battle
• Arm (someone) for defense
• Arm (someone) to fight
• Arm (someone) to the teeth
• Arm (someone) with confidence
• Arm (someone) with information
• Arm (someone) with knowledge
• Arm (someone) with skills
• Arm (someone) with tools
• Arm ergometer
• Arm in arm
• Arm of the law