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.
      [1913 Webster]

   3. (Zool.) A thin plate or scale; specif., one of the thin,
      flat processes composing the vane of a feather.
      [1913 Webster]

WordNet (r) 3.0 (2006):

lamina
    n 1: a thin plate or layer (especially of bone or mineral)

The Free On-line Dictionary of Computing (30 December 2018):

LAMINA

   A concurrent object-oriented language.

   ["Experiments with a Knowledge-based System on a
   Multiprocessor", Third Intl Conf Supercomputing Proc, 1988].

   ["ELINT in LAMINA, Application of a Concurrent Object
   language", Delagi et al, KSL-88-3, Knowledge Sys Labs,
   Stanford U].