lamina

lamina is a   Noun

Definition:

[1] A thin plate or scale; a laying over another; -- said of thin plates or platelike substances, as of bone or minerals.

[2] The blade of a leaf; the broad, expanded portion of a petal or sepal of a flower. Gray.

[3] A thin plate or scale; specif., one of the thin, flat processes composing the vane of a feather.

Synonyms: