RhymeZone: tube definitions

Definitions of tube:

noun: conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
noun: electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
noun: (anatomy) any hollow cylindrical body structure
noun: a hollow cylindrical shape
noun: electric underground railway
verb: convey in a tube
Example: "Inside Paris, they used to tube mail"
verb: provide with a tube or insert a tube into
verb: place or enclose in a tube
verb: ride or float on an inflated tube
Example: "We tubed down the river on a hot summer day"