The gaffer is the chief lighting technician on a set and is head of the electrical department. ... The name “gaffer” in Hollywood actually comes from British slang for a tool called the “gaff,” which was a hooked metal pole used in theatre to adjust the stage lights.

Why do Brits say gaffer?

an old man. British Informal. a boss, supervisor, or manager. a foreman or overseer in charge of a group of physical laborers: a factory gaffer.

What do gaffers mean?

gaffer \GAF-er\ noun. 1 : an old man — compare gammer. 2 a British : foreman, overseer. b British : employer. 3 : a head glassblower.