Definition of "ticktack" [tick•tack]

• A steady ticking sound, as of a clock. (noun)
• A prankster's device for tapping on a door or window from a distance. (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.

• "The ticktack sound of ice bouncing off ice filled the world, and the temperature plummeted even lower."
• "And Thursday you wrap it up is that a fair ticktack, as they say?"
• "We have all of our people here, we have Dana Bash, Suzanne Malveaux, who will be giving us the back-and-forth and the ticktack about what happened last night."