Dragon's Snowflake: a rare, coveted snowflake that is typically brought into being during the winter months. Dragon: from the Middle English, from Anglo-French dragun, from Latin dracon-, draco serpent, dragon, from Greek drakōn serpent; akin to Old English torht bright, Greek derkesthai to see, look at Date:13th century. Snowflake: a flake or crystal of snow.