steampunk

Short definition from Wiktionary

Noun

1. 1
   A subgenre of science fiction that depicts advanced technology combined with Victorian style and aesthetics, such as steam-powered machines and vehicles, visible gears and screws and people dressed in 19th-century attires.
2. 2
   A writer of steampunk fiction.
3. 3
   A person cosplaying as a steampunk character.

Verb

1. 1
   To depict in a steampunk manner.