marilith

plural mariliths

1. fantasyA powerful female demon with six arms and the lower body of a snake.

   A marilith can also constrict with her deadly tail. If the tail hits in combat, it wraps around a victim, automatically inflicting 4- 24 points of crushing damage each round.

   1993, Doug Stewart, Gary Gygax, Monstrous Manual, page 338

   1 more example

   If you play with certain demons (mariliths, vrocks, hezrous, bone devils, nalfeshnees, pit fiends, or water demons), you could eventually get Yeenoghu anywhere, and then he could get you Demo.

   2001, Kate Nepveu, “some tough questions?”, in rec.games.roguelike.nethack (Usenet)