A hollow tube is a long, empty object that doesn't have anything inside it. It typically looks like a cylinder and is often used for things like pipes or straws.
Sentences with «hollow tube»
I could make a mean hollow tube of fried bread crumbs mind you, but somehow, the cheese always managed to escape! (adventuresofaglutenfreemom.com)
The gut is a long hollow tube that's actually outside the body. (solvingleakygut.com)
A thin hollow tube is inserted into the epidural space near the base of your spine. (health-and-parenting.com)