Definition of Intuition

in·tu·i·tion--definition from Merriam-Webster

": a natural ability or power that makes it possible to know something without any proof or evidence : a feeling that guides a person to act a certain way without fully understanding why

: something that is known or understood without proof or evidence

1    :  quick and ready insight

2

a :  immediate apprehension or cognition

b :  knowledge or conviction gained by intuition

c :  the power or faculty of attaining to direct knowledge or cognition without evident rational thought and inference

1. "Intuition was telling her that something was very wrong."

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Original definition from the website: http://www.merriam-webster.com/dictionary/intuition