Suber
Origin
From Latin suber, apparently from the same Proto-Indo-European root as Old High German swigen ("to be silent"), possibly a reference to cork being stripped without harming the tree.
American Journal of Philology, Volume 71, 1950
Full definition of suber
Noun
suber
(uncountable)- (dated, technical) Cork, or the corresponding layer of woody tissue below the epidermis of a plant
- In many trees the suber is very slightly developed. But this is not the case with the Cork-oak (Quercus suber).