bathtub
n.— «Bathtub: Non-loadbearing aerodynamic leading edge structure in the way of the root end of the wing.» —“Airport Lingo” by Raphael Sheffield Southwest Airlines Blog/Nuts About Southwest Dec. 10, 2007. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...