What is the meaning of Snowflake?

A crystal of snow, having approximate hexagonal symmetry.

Any of several bulbous European plants, of the genus Leucojum, having white flowers.

The snow bunting, Plectrophenax nivalis.

Someone who believes they are particularly unique and special.

Someone hypersensitive to insult or offense, especially a young person with politically correct sensibilities.

A type of lesion that appears as scattered white-brown spots under high magnification light microscopy.

Something that is unique in every presentation.

A Caucasian person.

Someone (usually white) who was opposed to the abolition of slavery (Missouri, 1860s)

To fall in the manner of a snowflake.

To arrange (data) into a snowflake schema.

Source: wiktionary.org