K'uk'ulkan

Means "feathered serpent", from Classic Maya k'uk' "quetzal, quetzal feather" and kaan "serpent, snake". This was the name of a snake god in Maya mythology, roughly equivalent to the Aztec god Quetzalcoatl. This is the Yucatec Maya form — the K'iche' name is Q'uq'umatz (which is only partially cognate).