- (US, informal) television
- (Britain, informal) A type of woman's upper body garment consisting of a taut band of cloth around the breasts and back.
2015, Oscar Phoenix, This Hostage to Fortune:
- At the same time, Tara puts her arms into her boob tube.
- (garment): tube top (US)
The word used as a synonym for television was heard as early as 1965 on an episode of The Munsters. It was probably being used before that time.
slightly derogative term for television