| blowtube | (noun) a tube that directs air or gas into a flame to concentrate heat | Synonyms: blow tube, blowpipe |
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| (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowgun, blowpipe |
| cube | (noun) a block in the (approximate) shape of a cube | Synonyms: square block |
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| (noun) any of several tropical American woody plants of the genus Lonchocarpus whose roots are used locally as a fish poison and commercially as a source of rotenone | - |
| (noun) the product of three equal terms | Synonyms: third power |
| (noun) a hexahedron with six equal squares as faces | Synonyms: regular hexahedron |
| (noun) a three-dimensional shape with six square or rectangular sides | Synonyms: block |
| (verb) raise to the third power | - |
| (verb) cut into cubes | Synonyms: dice |
| jujube | (noun) chewy fruit-flavored jellied candy (sometimes medicated to soothe a sore throat) | - |
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| (noun) dark red plumlike fruit of Old World buckthorn trees | Synonyms: Chinese date, Chinese jujube |
| (noun) spiny tree having dark red edible fruits | Synonyms: Christ's-thorn, Jerusalem thorn, jujube bush, Ziziphus jujuba |
| lube | (noun) a substance capable of reducing friction by making surfaces smooth or slippery | Synonyms: lubricant, lubricating substance, lubricator |
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| (verb) apply a lubricant to | Synonyms: lubricate |
| nanotube | (noun) a fullerene molecule having a cylindrical or toroidal shape | Synonyms: carbon nanotube |
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| pickelhaube | (noun) a spiked helmet worn by German soldiers | - |
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| rube | (noun) a person who is not very intelligent or interested in culture | Synonyms: bumpkin, chawbacon, hayseed, hick, yahoo, yokel |
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| tube | (noun) conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases | Synonyms: tubing |
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| (noun) an electric railway operating below the surface of the ground (usually in a city) | Synonyms: metro, subway, subway system, underground |
| (noun) electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | Synonyms: electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, vacuum tube |
| (noun) (anatomy) any hollow cylindrical body structure | Synonyms: tube-shaped structure |
| (noun) a hollow cylindrical shape | Synonyms: pipe |
| (verb) place or enclose in a tube | - |
| (verb) convey in a tube | - |
| (verb) ride or float on an inflated tube | - |
| (verb) provide with a tube or insert a tube into | - |
| watertube | (noun) a boiler tube through which the water flows. | Synonyms: water tube |
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