winglet

[wing-lit]

wing·let

[wing-lit]
noun
1.
a little wing.
2.
Zoology. alula.
3.
Aeronautics.
a.
a small wing used mainly to carry external loads or to connect struts or gears to the fuselage.
b.
a short, near-vertical projection on a wing tip that reduces drag and improves fuel efficiency.

Origin:
1605–15; wing + -let
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Winglet is always a great word to know.
So is porifera. Does it mean:
phylum of worms with bilateral symmetry and soft, usually flattened bodies
animal phylum comprised of sponges
Collins
World English Dictionary
winglet (ˈwɪŋlɪt)
 
n
1.  a small wing, esp the bastard wing of a bird
2.  a small wing placed at the tip of the main wing of an aircraft and perpendicular to it designed to reduce the aircraft's vortex drag

Collins English Dictionary - Complete & Unabridged 10th Edition
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