lenticelle

Noun

lenticel (plural lenticels)

1. 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.
   • He raises his binocular telescope, bringing the birches near the shoreline into sharp relief, the eye-shaped lenticels in the pale bark seeming to stare back at him, as if following the train’s progress.2024, Sarah Brooks, The Cautious Traveller’s Guide to the Wastelands, Wiedenfeld & Nicolson, page 89
2. A small, lens-shaped gland on the underside of some leaves.