Greek Mythology The god regarding the seas, earthquakes, and ponies, and brother of Zeus.
In Greek myth, among the main Olympians, bro of Zeus, and supreme lord associated with sea, sometimes viewed as a benignant promoter of calm and prosperous navigation, but more frequently as an awful god of violent storm.
In zoology: A genus of worms.
A genus of hemipterous insects of family members Scutelleridæ.
A genus of crustaceans.
(Greek mythology) the god of this water and earthquakes in ancient mythology; brother of Zeus and Hades and Hera; identified with Roman Neptune