from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An early radio receiver using a crystal detector.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An early radio receiver, having no electrical power supply except the radio waves themselves; it used a crystal of lead or cadmium sulphide and a wire (the cat's whisker) touching the crystal's surface.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an early radio receiver using a crystal detector
Sorry, no etymologies found.
It looked like a parody of a human skull, with a batlike face, and cold, impassive eyes of colored crystal set in the unfamiliar blue-tinted metal.