from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An instant; a flash.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a very short time (as the time it takes the eye to blink or the heart to beat)
Short for split second hands, a stopwatch with two second hands, one beneath the other, one of which may be stopped independently of the other.(American Heritage® Dictionary of the English Language, Fourth Edition)