nightmare
Rarely used term for an unpleasant or painful dream. ... Origin: G. Oneiros, dream, + odyne, pain ... (05 Mar 2000) ... 
Type: Term Pronunciation: ō-nī′rō-din′ē-ă Definitions: 1. Rarely used term for an unpleasant or painful dream.
oneirodynia 1. Dreaming about painful situations; nightmares. 2. Troubled sleep involving nightmares and perhaps sleepwalking. One of the four great divisions of insanity recognized by William Cullen (1710-1790), a Scottish physician who emphasized the endogenous nature of mental disorders and their relationship to irritability of the nervous sys...