имя существительное 1) кошмар, страшный сон; ужас Например: to have a nightmare — видеть страшный сон horrible / terrible nightmare — страшный сон 2) [мифология] ведьма, которая душит спящих
noun Etymology: Middle English, from 1night + 1mare 1. an evil spirit formerly thought to oppress people during sleep 2. a frightening dream that usually awakens the sleeper 3. something (as an experience, situation, or object) having the monstrous character of a nightmare or producing a feeling of anxiety or terror • nightmare adjective • nightmarish adjective • nightmarishly adverb