Synonym: hose, pipe, reed. Similar words: tune, be, cue, cute, huge, rub, rule, sue. Meaning: [tuːb /tju-] 
n. 1. conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases 2. electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope 3. a hollow cylindrical shape 4. (anatomy) any hollow cylindrical body structure 5. an electric railway operating below the surface of the ground (usually in a city). v. 1. provide with a tube or insert a tube into 2. convey in a tube 3. ride or float on an inflated tube 4. place or enclose in a tube.
n. 1. conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases 2. electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope 3. a hollow cylindrical shape 4. (anatomy) any hollow cylindrical body structure 5. an electric railway operating below the surface of the ground (usually in a city). v. 1. provide with a tube or insert a tube into 2. convey in a tube 3. ride or float on an inflated tube 4. place or enclose in a tube. 
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241. From the alleyway outside came the " tock - tock ! " of a dumpling - pedlar striking his bamboo tube.
242. By the LED numerical code tube demonstrated the decoder outputs signal.