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SINCE 1828
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double-o

noun, often capitalized O
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plural -s

Definition of double-o

: a close examination or inspection gave the two strangers the well-known double-o— Walker Matheson

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History and Etymology for double-o

so called from the two O's in once-over

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Cite this Entry

“Double-o.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/double-o. Accessed 30 Mar. 2020.

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