Noun
knightmare (plural knightmares)
(chess, humorous, informal) A figurative nightmare involving a knight, e.g. a crushing knight move or a hopeless situation involving a knight.
In it, we are shown the Knightmare future similar to the one from Batman v Superman: Dawn of Justice, a Joker card fluttering ominously amid a post-apocalyptic landscape. Source: Internet
There's still a lot of mystery surrounding the Knightmare scene in Flash's subsequent trip through a hole in time to visit Bruce in the Batcave, but one thing's for certain: it changed things. Source: Internet
The Knightmare vision takes place only 5 years on from the present DCEU, so Alfred's death is unlikely to have been natural either. Source: Internet