Lenticel

from WordNet (r) 3.0 (2006)
lenticel
    n 1: one of many raised pores on the stems of woody plants that
         allow the interchange of gas between the atmosphere and the
         interior tissue
from The Collaborative International Dictionary of English v.0.48
Lenticel \Len"ti*cel\ (l[e^]n"t[i^]*s[e^]l), n. [F. lenticelle,
   dim. fr. L. lens, lentis, a lentil. Cf. {Lentil}.] (Bot.)
   (a) 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.
   (b) A small, lens-shaped gland on the under side of some
       leaves.
       [1913 Webster]
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