tube (
http://definr.com/tube)
n 1: conduit consisting of a long hollow object (usually
cylindrical) used to hold and conduct liquids or gases
[syn:
tubing]
2: electronic device consisting of a system of electrodes
arranged in an evacuated glass or metal envelope [syn: {vacuum
tube},
thermionic vacuum tube,
thermionic tube, {electron
tube},
thermionic valve]
3: a hollow cylindrical shape [syn:
pipe]
4: (anatomy) any hollow cylindrical body structure [syn: {tube-shaped
structure}]
5: electric underground railway [syn:
metro,
subway,
underground]
v : convey in a tube