ALL meanings of underwing
un·der·wing
U u - noun underwing one of the hind wings of an insect. 1
- noun underwing any of several noctuid moths of the genus Catocala, characterized by red-, yellow-, or orange-banded hind wings. 1
- noun underwing the hind wing of an insect, esp when covered by the forewing 0
- noun underwing either of the pair of hind wings of an insect 0
- noun underwing any of various noctuid moths (esp. genus Catocala) having brightly colored hind wings that are hidden under drab forewings except during flight 0