Mega-watt grin

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Spiritual09

Member
Spanish- Spain
Hello, I've come across the sentence: "She had a mega-watt grin". I never heard that before, I guess it's very informal. What is the real meaning?
 
  • Copyright

    Senior Member
    American English
    She had a brilliant grin – equal to a million watts of energy. (This may be hyperbole.) :)

    "megawatt" is one word.
     
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