[bak-pak] 
| 1. | a pack or knapsack, often of canvas or nylon, to be carried on one's back, sometimes supported on a lightweight metal frame strapped to the body. |
| 2. | a piece of equipment designed to be used while being carried on the back. |
| 3. | to go on a hike, using a backpack: We went backpacking in the Adirondacks. |
| 4. | to place or carry in a backpack or on one's back. |
| back pack | |
noun | |
| a bag carried by a strap on your back or shoulder [syn: backpack] |
