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Definition of OK noun from the Oxford Advanced Learner's Dictionary

OK

noun
 
/əʊˈkeɪ/
 
/əʊˈkeɪ/
the OK
[singular] (informal)
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  1. permission synonym go-ahead
    • I'm still waiting for the boss to give me the OK.
    Extra Examples
    • Mum's given me the OK to go out.
    • The building plans finally got the OK.
    Word Originmid 19th cent. (originally US): probably an abbreviation of orl korrect, humorous form of all correct, popularized as a slogan during President Van Buren's re-election campaign of 1840 in the US; his nickname Old Kinderhook (derived from his birthplace) provided the initials.
See OK in the Oxford Advanced American Dictionary
hat-trick
noun
 
 
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