hydra

B2 noun

Các nghĩa

quái vật nhiều đầu

A dragon-like creature with many heads and the ability to regrow them when maimed.
thuỷ tức

Any of several small freshwater polyps of the genus Hydra and related genera, having a naked cylindrical body and an oral opening surrounded by tentacles.
vấn đề nan giải

A complex, multifarious problem or situation that cannot be easily and rapidly solved.

figuratively