Altair Definition
 ăl-tīr, -târ, ăltīr, -târ 
    noun
  
 A very bright, variable double star in the constellation Aquila, approximately 15.7 light years from Earth. Altair is one of the stars that make up the Summer Triangle.
 American Heritage 
The brightest star in the constellation Aquila: magnitude, 0.76
 Webster's New World 
Origin of Altair
-  
Arabic (an-nasr) aṭ-ṭā’ir the flying (eagle) al- the ṭā’ir flying active participle of ṭāra to fly ṭyr in Semitic roots
From American Heritage Dictionary of the English Language, 5th Edition
 
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