Sub Definition
A submarine.
Origin of Sub
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Shortened form of any of various words beginning sub-, such as submarine, subroutine, substitute, subscription.
From Wiktionary
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Middle English from Latin from sub under upo in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
The sandwich is so called because the bun's cylindrical shape resembles the shape of a submarine.
From Wiktionary
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From the Latin sub, meaning under
From Wiktionary
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From Latin sub.
From Wiktionary
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