Top Definition
Name first derived as a slang-term definition in the 21st century (2011). Commonly used as a noun and an adjective, to describe a person. The most well known meaning of this name is "someone who is giddy and happy 99.2736% of the time", "may seem 'blunt' and 'dull' in the outside, but the true nature of the person is quite the opposite", "seems to have perfected social skills in many different forms" and last but not least, "someone who is also a great techie (formally and mainly for a girl.)"
Man, that girl is such a HyeIn! How does she do it?!
That is something HyeIn would do!
by Zackie Jongee Lee April 10, 2011

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This name also refers to someone who perfects or nearly perfects the SAT.
That's a HyeIn skill.. 2390 on the SAT? Dang girl!
by Zackie Jongee Lee June 27, 2011

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt