- The definition of a drawtube is a tube that slides while inside another tube.
The moving part of the focusing tool on a telescope is an example of a drawtube.
The eyepiece of this microscope is an example of a drawtube.
drawtube definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a tube sliding within another tube, as in the eyepiece of a microscope
drawtube definition by American Heritage Dictionary
A tube that slides within another tube, as in a small hand telescope.