lenticel
/ˈlɛntɪsɛl/
noun
- A small, corky pore on the bark of a woody plant that allows gas exchange between the plant's interior and the air.
- You can see lenticels clearly on the smooth bark of a cherry tree.
- During heavy rain, lenticels can become waterlogged and affect the tree's breathing.
- The lenticels on the birch tree trunk look like tiny horizontal slits.