any object that can be used to hold things (especially a large metal boxlike object of standardized dimensions that can be loaded from one form of transport to another)

a safety restraint in an automobile; the bag inflates on collision and prevents the driver or passenger from being thrown forward

a bag carried by a strap on your back or shoulder

a small cloth bag filled with dried beans; thrown in games

a bag that fills with air

a bag in which the body of a dead soldier is placed