- tube⇄adj. tubelike.
- tube⇄noun 1. a long pipe of metal, glass, rubber, plastic, or other material. Tubes are used especially to carry or contain a liquid or gas.
2. a small cylinder of thin, easily bent metal with a cap that screws on the open end, used for holding toothpa - tube⇄tube, noun, verb, tubed,tubing.
- tube⇄v.t. 1. to furnish or fit with a tube or tubes; insert a tube in.
2. to pass through or enclose in a tube.
3. to make tubular.