tube /tuːb/noun 10verb 3forms 3phrases 1 noun10 •a long, round object that is empty in the middle •An approximately cylindrical container, usually with a crimped end and a screw top, used to contain and dispense semiliquid substances.A tube of toothpaste. •Short for speaking tube. •The London Underground.Still, it’s not just the decline of civilisation that worries me, nor the (related) effect on Tube manners (Candy Crushers are rarely very chivalrous). — 2014 •(UK) The London Underground railway system, originally referred to the lower level lines that ran in tubular tunnels as opposed to the higher ones which ran in rectangular section tunnels. (Often the tube.)I took the tube to Waterloo and walked the rest of the way.He took the tube to Westminster and disappeared. •(US, informal) A television. Compare cathode ray tube and picture tube.I sit around and watch the tube, but nothing's on. I change the channels for an hour or two. — 1994 •A wave which pitches forward when breaking, creating a hollow space inside.It seemed like Butch was invincible, like he could do nothing wrong, coming through one unbelievable tube after another. — 1966 •(Australia, slang) A tin can containing beer.It's alright to cop a warm tube of Fosters and a cold pie 'n' peas when you're dated by one of the locals[.] — 1967 •(Scotland, slang) An idiot.'Don't be a bloody tube, Jack,' she told me. (I always loved it when she used Scottish terms of abuse in that English accent of hers.) — 2007 •(informal, no longer used) One of the tubular tunnels of the London Underground. verb3 •To supply with, or enclose in, a tube.She tubes lipstick in the cosmetics factory. •To ride an inner tube.They tubed down the Colorado River. •(informal) To intubate.The patient was tubed. formstubed · tubing · tubes Phrases with tube tube steakA frankfurter/hot dog.