Wing case Meaning, Definition & Usage

  1. noun either of the horny front wings in beetles and some other insects which cover and protect the functional hind wings
    elytron.

WordNet

Definitions
  1. (Zoöl.), one of the anterior wings of beetles, and of some other insects, when thickened and used to protect the hind wings; an elytron; called also wing cover.

Webster 1913