GASLIGHT

gaslight

(noun) light yielded by the combustion of illuminating gas

Source: WordNet® 3.1

Etymology 1

Noun

gaslight (countable and uncountable, plural gaslights) (Britain, historical)

A lamp which operates by burning piped illuminating gas.

Synonym: gas lamp (US)

The light produced by the burning gas in such a lamp.

Hypernyms

• lamp

• light

Etymology 2

Verb

gaslight (third-person singular simple present gaslights, present participle gaslighting, simple past and past participle gaslit or gaslighted)

(transitive) To manipulate (someone) psychologically such that they question their own memory, perception, and sanity, thereby evoking in them cognitive dissonance and low self-esteem.

Synonym: head-game

Source: Wiktionary

Gas"light`, n.

1. The light yielded by the combustion of illuminating gas.

2. A gas jet or burner.

Source: Webster’s Unabridged Dictionary 1913 Edition