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Of an aircraft, having an uneven amount of weight in one of the wings. The plane was a bit wing heavy due to the left fuel tank being heavier than the right.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
mod. alcohol intoxicated. From the way he’s staggering, I’d say he’s more than a little wing heavy.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.