Definitions

1. noun

A narrow board, typically of wood, used for carrying or packing goods, particularly in the outdoors.

“She attached the packboard to her backpack for the long hike.”

2. noun

A device for attaching a backpack or other load-carrying system to a pack animal, such as a mule or donkey.

“The packboard allowed the hikers to distribute the weight of their gear more evenly.”