[wosh-in, wawsh-]
noun Aeronautics.
a warp in an airfoil that gives an increase in the angle of attack toward the tip.
Also, wash-in.
Compare washout ( def 3 ).

1930–35; noun use of verb phrase wash in

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
washin (ˈwɒʃɪn)
aeronautics an increase in the angle of attack of an aircraft wing towards the wing tip
[C20: from wash (flow) + in]

Collins English Dictionary - Complete & Unabridged 10th Edition
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