Definition of "jackscrew" []

• A jack operated by a screw. Also called screw jack. (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.

• "They're focusing on a piece in the tail called the jackscrew, which is suspected in the crash of Alaska Airlines Flight 261 on January 31."
• "In that case, a mechanism known as a jackscrew failed because of shoddy maintenance, causing the plane to become uncontrollable."
• "There have been some reports that there may have been common problems with something called a jackscrew, some different types of bolts have been problematic."