underwing

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Definitions from WordNet

Noun underwing has 1 sense

underwing - moth having dull forewings and brightly colored hind wings
--₁ is a kind of noctuid moth, noctuid, owlet moth
--₁ is a member of Catacala, genus Catacala
--₁ has particulars: red underwing, Catocala nupta

Definitions from the Web

Underwing

Noun

An underwing refers to the bottom surface of a bird's or insect's wing.

Example Sentence: The underwing of the butterfly was vibrantly colored.

Noun

Underwing also refers to a type of moth belonging to the genus Catocala, known for their distinctive colored hindwings.

Example Sentence: The underwing moth displayed its vibrant hindwings as it fluttered around the garden.

Noun

In aviation, underwing describes the position of aircraft-mounted components situated beneath the wings.

Example Sentence: The fuel tanks are often placed underwing on commercial airplanes to maximize cabin space.

Adjective

As an adjective, underwing means situated or occurring beneath the wings.

Example Sentence: The underwing landing lights illuminated the runway during the night landing.