The bronchial tubes carry air to and from the lungs.

I found a collection of Nixie tubes at the antique store.

She has a collection of boob tubes in her closet.

Venturi tubes are used to measure fluid flow rates.

The venturi tubes are used to measure the flow rate of a fluid.

I bought some toke tubes for the party.

My plans for the weekend went down the tubes when it started raining.

I need to clean the Schlenk tubes before using them.

Electron tubes are used in amplifiers and televisions.

The scientist carefully placed the test tubes in the rack.