sweepback

sweepback

[sweep-bak]
noun Aeronautics.
the shape of, or the angle formed by, an airplane wing or other airfoil the leading or trailing edge of which slopes backward from the fuselage.

Origin:
1915–20; noun use of verb phrase sweep back

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World English Dictionary
sweepback (ˈswiːpˌbæk)
 
n
the rearward inclination of a component or surface, such as an aircraft wing, fin, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
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