A pipe; a siphon; a canal or conduit; a hollow cylinder, either of wood, metal or glass, used for the conveyance of fluids, and for various other purposes.

A vessel of animal bodies or plants, which conveys a fluid or other substance.

In botany, the narrow hollow part of a monopetalous corol, by which it is fixed to the receptacle.

In artillery, an instrument of tin, used in quick firing.

To furnish with a tube; as, to tube a well.