Tegmen

1. n. Same as Tectrices.
2. n. A tegument or covering.
3. n. The inner layer of the coating of a seed, usually thin and delicate; the endopleura.
4. n. One of the elytra of an insect, especially of certain Orthoptera.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.