Plain English Meaning
The far ends of each wing — the parts that stick out the most to the left and right of the airplane.
Full Definition
The outermost ends of an airplane's wings, where the wing structure terminates laterally. Wingtips are shaped to reduce aerodynamic drag caused by air spilling from the high-pressure area below the wing to the low-pressure area above it, and they often house position lights and, on some aircraft, fuel vents or winglets.
Context Anchor
Seen during preflight inspection, taxiing near , and discussions of the airplane’s outer wing surfaces.