drawtube

[draw-toob, -tyoob]

noun

a tube sliding within another tube, as the tube carrying the eyepiece in a microscope.

Origin of drawtube

First recorded in 1890–95; draw + tube

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for drawtube

drawtube

noun

a tube, such as one of the component tubes of a telescope, fitting coaxially within another tube through which it can slide

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012