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complex

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noun [countable] American English pronunciation: complex /ˈkɑmˌpleks/ 
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singularcomplex
pluralcomplexes
  1. 2
    an emotional problem caused by unreasonable fears or worries
    have/develop a complex about something:

    I used to have a complex about being in crowds.

    give someone a complex:

    If you keep telling her she's clumsy, you'll give her a complex.

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a very large party where people eat, sell or share many different types of food, usually held outside or in a large public building

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