underwings
Concealed hind wings
Underwings are the undersides of a bird's or insect's wings, often differently colored than the upper surface.
Many moths in the genus *Catocala* are called underwing moths because their drab forewings conceal brightly colored hindwings—revealed suddenly when threatened: The red underwing flashed its scarlet bands.
In aircraft, underwing refers to the area beneath the wing where fuel tanks or weapons mount.
Posterior pair of wings
- nocturnalActive during darkness
- camouflageConcealment through visual blending
- barkSharp canine vocalization
- crypticObscure in meaning
startle · predator · forewings · resting · tree trunk · banding · eyespots
Concealing undergrowth or plumage
- plumageBird's complete feather coat
- feathersBird's lightweight covering
- downyHaving soft, fine texture
- barbsSharp points or jibes
quills · preening · molting · patterned · speckled · mottled · barring · contour
Ascend to heights
- glideMove with effortless continuity
- flapOne-sided attached cover
- swoopRapid downward plunge
- hoverRemain suspended midair
ascend · plummet · drift · airborne · lift · wingbeat · thermals · updraft
Aircraft's central structure
- inspectionFormal assessment of condition
- maintenancePreserving working condition
- hangarAircraft storage structure
- aileronWing-mounted roll control
flaps · landing gear · struts · fairings · nacelle · rivets · hydraulics · fuel tanks
hindwings
Posterior pair of wings
- nocturnalActive during darkness
- camouflageConcealment through visual blending
- barkSharp canine vocalization
cryptic · startle · predator · forewings · resting · tree trunk · banding · eyespots
coverts
Concealing undergrowth or plumage
- plumageBird's complete feather coat
- feathersBird's lightweight covering
- downyHaving soft, fine texture
barbs · quills · preening · molting · patterned · speckled · mottled · barring · contour · vaned
soar
Ascend to heights
hover · ascend · plummet · drift · airborne · lift · wingbeat · thermals · updraft · tailwind
fuselage
Aircraft's central structure
- inspectionFormal assessment of condition
- maintenancePreserving working condition
- hangarAircraft storage structure
aileron · flaps · landing gear · struts · fairings · nacelle · rivets · hydraulics · fuel tanks · structural
- mothsmoth, moths, luna moth, atlas moth, hawk moth