Wing wiki:
>For some other uses of the word "wing" please see Wing (disambiguation). A wing is a surface used to produce an aerodynamic force normal to the direction of motion by travelling in air or another gaseous medium, facilitating flight. It is a specific form of airfoil. The first use of the word was for the foremost limbs of birds, but has been extended to include other animal limbs and man-made devices.
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material wiki:
[erial may refer to one of the following:Material is the substance or matter from which something is or can be made, or also items needed for doing or creating something. Material is cloth or fabric.Materials are inputs to production or manufacturing. They are often raw - that is unprocessed, but are sometimes processed before being used in more advanced production processes. In general, in technologically advanced societies, the materials are not finished consumer goods. Some examples of materials are paper and silk.
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