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tubeMain Entry: tube Pronunciation: \ˈtüb, ˈtyüb\ Function: noun Etymology: French, from Latin tubus; akin to Latin tuba trumpet Date: 1651 1 : any of various usually cylindrical structures or devices: as a : a hollow elongated cylinder; especially : one to convey fluids b : a soft tubular container whose contents (as toothpaste) can be removed by squeezing c (1) : tunnel (2) British : subway b d : the basically cylindrical section between the mouthpiece and bell that is the fundamental part of a wind instrument — tubed \ˈtübd, ˈtyübd\ adjective — tube·like \ˈtüb-ˌlīk, ˈtyüb-\ adjective — down the tube or down the tubes : into a state of collapse or deterioration
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