winglet

詳細解釋：

wing.let

n.（名詞）
A small or rudimentary wing.
小翼：小翼或未發展完全的翼
A short, almost vertical stabilizing fin projecting from the tip of an aircraft wing.
飛機小翅：飛機機翼尖端突出的短且幾乎垂直的起固定作用的翅片