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1. Oxford American Dictionary

   rotary wing

   • IPA[ˈrōdərē wiNG]

   • n.
     an airfoil that rotates in an approximately horizontal plane, providing all or most of the lift in a helicopter or autogiro

   • noun: rotary wing, plural noun: rotary wings

2. • 釋義

   n.

   名詞

   • 1. an airfoil that rotates in an approximately horizontal plane, providing all or most of the lift in a helicopter or autogiro a leading authority in rotary wing design rotary wing aircraft