backpack
bak pak
- n a bag carried by a strap on your back or shoulder
 - v  hike with a backpack
                    
                        
                            
Every summer they are backpacking in the Rockies 
- An airport shuttle driver under arrest in Colorado may have been planning with others to detonate backpack bombs on New York City trains in a terrorism plot similar to past attacks .
 - After the test pilot of a rocket-propelled backpack told Popular Science magazine in 1969 that the machine made him "feel safer than I do driving the family car in traffic," it .
 - The results: those imagining themselves buying the backpacks in public were more likely to go for the enviro backpacks, even though they weren't as nice as the luxury models.