from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An instrument consisting of a tube or speculum equipped with a light, used to examine the rectum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a tube-like instrument, equipped with a light, used to examine the rectum; a rectoscope
from The Century Dictionary and Cyclopedia
- n. An instrument used in the examination of the rectum; a rectal speculum.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an endoscope for examining the rectum
Greek prōktos, anus + -scope.(American Heritage® Dictionary of the English Language, Fourth Edition)