tube

US /tuːb/
UK /tuːb/
"tube" picture
1.

a long, hollow cylinder of metal, plastic, glass, etc., used for holding or transporting something, or for a passage for something

:
Water flows through the tube.
He squeezed the toothpaste tube.
2.

(British English) the London Underground railway system

:
I'll take the Tube to work.
The Tube can be very crowded during rush hour.
3.

(informal) a television set

:
What's on the tube tonight?
He spent all day watching the tube.
1.

to put into or provide with a tube

:
The blood sample was tubed for analysis.
They tubed the wires through the wall.