Definition of "whatsit" []

• Informal Something or someone whose name has been forgotten or is not known. (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.

• "When I go into Time Machine it has my user directories (i.e. in Finder everything under my username whatsit, such a Documents) excluded from the backup."
• "It's stuffed to bursting with arch-villains, secret societies, weird murderers, femmes fatales, hulking brutes, and little "whatsit" dolls made from human skin and hair--one of which chuckles if jostled or shaken."
• "I do not know how to make a "whatsit" unresponsive, so I cannot test Process Tamer's capability,"