n., pl., -dras, or -drae (-drē').
An ancient device that measured time by marking the regulated flow of water through a small opening. Also called water glass.
[Latin, from Greek klepsudra : kleptein, kleps-, to steal + hudōr, water.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
