from
The Collaborative International Dictionary of English v.0.48
Lamina \Lam"i*na\ (l[a^]m"[i^]*n[.a]), n.; pl. L. {Lamin[ae]}
(-n[=e]) E. {Laminas} (-n[.a]z). [L. cf. {Lamella}.]
1. A thin plate or scale; a layer or coat lying over another;
-- said of thin plates or platelike substances, as of bone
or minerals.
[1913 Webster]
2. (Bot.) The blade of a leaf; the broad, expanded portion of
a petal or sepal of a flower. --Gray.
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3. (Zool.) A thin plate or scale; specif., one of the thin,
flat processes composing the vane of a feather.
[1913 Webster]