Definition:
a snowflake is a piece of ice that falls from the sky during winter, usually in the form of a hexagonal crystal. Snowflakes appear often during snowfalls and are one of the main characteristics of winter weather. A snowflake can refer to either a single ice crystal or a number of ice crystals that fall together.
Examples:
1. The ground was covered in snowflakes that sparkled in the light.
2. We enjoyed playing in the snowflakes, which kept getting bigger and bigger.
3. Snowflakes twirled in the air as we made our way down the hill.