MEANING: verb tr.: To manipulate psychologically.

ETYMOLOGY: From the title of the classic movie Gaslight (1940 and its 1944 remake), based on author Patrick Hamilton’s 1938 play. The title refers to a man’s use of seemingly unexplained dimming of gaslights (among other tricks) in the house in an attempt to manipulate his wife into thinking she is going insane. Earliest documented use: 1969.

GA BLIGHT - serious peach-tree disease

GAS FIGHT - boys sitting around a campfire eating beans (think Blazing Saddles)

GALS LIGHT - what Wonder Woman uses to see when it's dark