Rinatrix

Origin

From Late Latin rinatrix (in Bartholomaeus Anglicus), apparently a misreading of Lucan 9.720 et natrix.

Full definition of rinatrix

Noun

rinatrix

(obsolete) A type of water snake formerly thought to poison water. 14th-19th c.

1567, John Maplet, A Greene Forest:Rinatrix is a Serpent which with enuenoming poysoneth ye water, so that into what cleare Fountaine or Riuer he swimmeth, he infecteth it.
1613, John Marston, William Barksted, The Insatiate Countess, I.1:Mountebank with thy pedantical action,
Rinatrix, bugle-ox, rhinoceros.