hippocampus

• ⇰ A fabulous monster, with the head and fore quarters of a horse joined to the tail of a dolphin or other fish (<spn>Hippocampus brevirostris</spn>), -- seen in Pompeian paintings, attached to the chariot of Neptune.
• ⇰ A genus of lophobranch fishes of several species in which the head and neck have some resemblance to those of a horse; -- called also sea horse>.
• ⇰ A name applied to either of two ridges of white matter in each lateral ventricle of the brain. The larger is called >hippocampus major > or simply >hippocampus >. The smaller, >hippocampus minor >, is called also ergot> and calcar>