noun.
One of the thin scales, plates, layers, or membranes in an organism, as one of the gills of a mushroom or one of the thin sheets that make up certain bones.
The Century Dictionary and Cyclopedia
noun.
A thin plate or scale. Specifically
noun.Synonyms See lamina.
noun.plural The British pharmacopœial name for medicated gelatin disks used in ophthalmic practice.
the GNU version of the Collaborative International Dictionary of English
noun.
a thin plate or scale of anything, as a thin scale growing from the petals of certain flowers; or one of the thin plates or scales of which certain shells are composed.