Lenticel

n.

1.

(Bot.) One of the small, oval, rounded spots upon the stem or branch of a plant, from which the underlying tissues may protrude or roots may issue, either in the air, or more commonly when the stem or branch is covered with water or earth.

Noun

1.

lenticel - one of many raised pores on the stems of woody plants that allow the interchange of gas between the atmosphere and the interior tissue

pore, stoma, stomate