little brother

derived from the japanese word chisana which means tiny.

chichan in gender terms means a small person/man

chichan in non-gender terms refers to small and minimal concepts.

an awesome person, small but terrible.
I drive my chichan to school everyday.
by emorock February 8, 2013
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Used to identify anyone who is incredibly good looking.
by luigiman12 September 28, 2007
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