1. (informal) assist and protect 
2. (informal) ride in the front passenger seat of a vehicle, next to the driver

Encyclopedia: Ride shotgun

• actinic radiation
• actinic ray
• actinide
• actinide series
• Actinidia
• Actinidia arguta
• Actinidia chinensis
• Actinidia deliciosa
• Actinidia polygama
• Actinidiaceae
• Actiniopteris
• actinism
• actinium
• actinoid
• actinolite
• Actinomeris
• Actinomeris alternifolia
• actinometer
• actinometric
• actinometrical
• actinometry
• actinomorphic
• actinomorphous
• actinomyces
• Actinomycetaceae