资料来源 : Webster's Revised Unabridged Dictionary (1913)

Tegmen \Teg"men\, n.; pl. {Tegmina}. [L., fr. tegere, tectum, to
   cover.]
   1. A tegument or covering.

   2. (Bot.) The inner layer of the coating of a seed, usually
      thin and delicate; the endopleura.

   3. (Zo["o]l.) One of the elytra of an insect, especially of
      certain Orthoptera.

   4. pl. (Zo["o]l.) Same as {Tectrices}.

资料来源 : WordNet®

tegmina
     See {tegmen}