A tapered thermic syphon water-tube inserted in the furnace of a Lancashire boiler.

plural of Galloway tube

plural of field tube

plural of drowned tube

plural of muck tube

A tube for the removal of mud and rock debris out to the surface of a caisson.

A kind of phytoclast consisting of micrometre-scale tubes with a banded internal ornamentation, known from terrestrial/freshwater settings from the early Silurian onwards.

plural of banded tube

(electronics, becoming dated) In a television set, before the development of LED screens, the cathode ray tube which produced moving images on its surface.

plural of photomultiplier tube