galaxy
US /ˈɡæl.ək.si/
UK /ˈɡæl.ək.si/
1.
a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
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Our solar system is part of the Milky Way galaxy.
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Astronomers discovered a new galaxy far beyond our own.
2.
a large, impressive, or influential group of people or things.
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The event attracted a whole galaxy of stars and celebrities.
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He presented a galaxy of ideas for the new project.