(anatomy) hollow longitudinal dorsal tube formed in the folding and subsequent fusion of the opposite ectodermal folds in the embryo that gives rise to the brain and spinal cord

A bronchus

(nautical) A metal tube mounted in a submarine or surface warship into which a torpedo may be loaded and launched through the hull or from the deck; a torpedo launcher.

(anatomy) A Fallopian tube

plural of tube sock

A one-size-fits-all sock, having a plain tubular shape rather than one designed to match the contours of the foot.

plural of tube steak

(electronics, historical) An obsolete electronic device for displaying numerals or other information by means of glow discharge.

A tube with a constriction, utilizing venturi effect e.g. to measure the velocity or volume of a fluid flow.

(slang) A marijuana cigarette.