suber
/ˈsuːbər/; /ˈsuːbɛr/ or /suːˈbɛr/Definitions
1. noun
The outer, woody layer of a tree trunk or branch, typically 5-10 cm thick, and often used for various purposes such as furniture, fencing, or construction.
“The carpenter used a chisel to remove a piece of suber from the old oak tree.”