Mythical Bird That Is Reborn From Its Ashes
Puzzle 10 of Millennial Words Hard Pack
Question is: Mythical Bird That Is Reborn From Its Ashes
and the answer is: PHOENIX
Word Meaning:
PHOENIX — (mythology) A mythological bird, said to be the only one of its kind, which lives for 500 years and then dies by burning to ashes on a pyre of its own making, ignited by the sun. It then arises anew from the ashes.
Definitions from Wiktionary.