navy
US /ˈneɪ.vi/
UK /ˈneɪ.vi/

1.
the branch of a nation's armed forces that conducts military operations at sea.
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She joined the Navy after graduating from college.
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The country's navy is responsible for protecting its maritime borders.
2.
a very dark blue color, similar to the color of the uniforms worn by naval officers.
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The suit was a deep navy blue.
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She painted her bedroom walls in a calming navy shade.
1.
of a dark blue color.
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He wore a navy suit to the formal event.
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The car was a sleek navy sedan.