tenner

1. (informal, UK, Ireland) A monetary note (bill) whose face value is ten basic units of currency. Originally, a ten-shilling (half pound) note.Examples: "[...] or, if you're feeling brave, a tenner. Tell your child they have a chance to win the fiver if they can [...]"; "The more a shop looks as though it trades in farthings and ha’pennies, the more tenners and twenties you can expect to hand over at the till."; "I’ve visited Eton, there’s loads of places like it, and if that’s all you know, then you’ve definitely not had to worry about pulling a tenner out of the bank…"IrelandUKinformal

2. (film, slang) A kind of 10-kilowatt lamp.Examples: "The basic 10K, known as a tenner or studio 10K, has a 20-inch fresnel. The big daddy of the group is the Big Eye tenner, which has a 24-inch lens."slang