CEO (an acronym for chief executive officer) - [noun] the highest rank in a business company
Examples of use
After he'd been appointed the CEO of his company, he could finally afford the beautiful mansion at the seaside that his wife had always been dreaming about.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
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