An elytron is a modified, hardened forewing of certain insect orders, notably beetles and a few of the true bugs such as the family Schizopteridae; in most true bugs, the forewings are instead called hemelytra, as only the basal half is thickened while the apex is membranous.

What does it mean to be under someone's wing?

: to help, teach, or take care of (someone who is younger or has less experience) He took the rookie pitcher under his wing.

What is taking wing?

: to begin to fly The ducks took wing and flew away. —often used figuratively Let your imagination take wing and explore the possibilities.