legendary creature

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a monster that is unverifiable but popularly accepted as possibly factual
• Hypernyms:
mythical monster, mythical creature
• Hyponyms:
abominable snowman, yeti, doppelganger, sea serpent
• Instance Hyponyms:
Bigfoot, Sasquatch, Loch Ness monster, Nessie