noun.
A mineral concretion, usually of calcium carbonate, occurring in the epidermal cells of certain plants, such as figs.
noun.
undefined
The Century Dictionary and Cyclopedia
noun.
A peculiar concretion formed within the cells of certain plants, composed chiefly of crystals and attached to the wall of the cell by a short pedicel.
the GNU version of the Collaborative International Dictionary of English
noun.
A concretion of mineral matter within a leaf or other part of a plant.