tube

1 a long hollow cylinder for carrying a substance (as a liquid or gas) watched the liquid move through the tube between the flasks and recorded the movement in his chemistry notebook Synonyms channel, conduit, duct, leader, line, penstock, trough, pipeRelated Words drain, drainpipe, funnel, hydrant, main, smokestack, spout, standpipe, stovepipe, tile, waste pipe, waterspout; pipage (or pipeage), pipeline, piping

2 an electronic device with a screen and speakers that reproduces images and sound we plan to relax and spend some time in front of the tube tonight Synonyms boob tube, box, idiot box, telly [chiefly British], television, TVRelated Words LCD, plasma; home theater, home video