Webster's Revised Unabridged Dictionary · 1913

Nereis

Nereis (? o?) , proper noun

[Latin]

1.
(Class. Mythology) A Nereid. See Nereid.
2.
(Zoology) A genus, including numerous species, of marine chaetopod annelids, having a well-formed head, with two pairs of eyes, antennae, four pairs of tentacles, and a protrusile pharynx, armed with a pair of hooked jaws.