An extremely short period of time; an instant.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "eyeblink" in a sentence
"And then between that lost mission and the loss of Columbia in '03 came that other event when, in an eyeblink, two mighty steel towers gave way to blank sky too."
"But Christianity, in Mr. Sebag Montefiore's tale, is little more than a sideshow in the Jerusalem story, an eyeblink in a foreground struggle between Arabs and Jews."
"So maybe there are enormous subcrustal water reservoirs ... but why would they well to the surface right now in an eyeblink compared with the history of the planet?"