Definition of "bushing" [bush•ing]

• A fixed or removable cylindrical metal lining used to constrain, guide, or reduce friction. (noun)
• Electricity An insulating lining for an aperture through which a conductor passes. (noun)
• An adapter threaded to permit joining of pipes with different diameters. (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 ideal replacement bushing is one made from polyurethane."
• "Sometimes the first mode is resorted to with the addition of what is called bushing the peg-hole, that is, after the glueing performance has been gone through, it will last strong enough while the hole is being enlarged, a cylindrical plug of wood being inserted, and glued."
• "Is it just me or is Obama "bushing" it up a little bit on this one."