accessory
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accessory
1. Law a person who incites someone to commit a crime or assists the perpetrator of a crime, either before or during its commission
2. assisting in or having knowledge of an act, esp a crime
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
accessory
[ak′ses·ə·rē] (mechanical engineering)
A part, subassembly, or assembly that contributes to the effectiveness of a piece of equipment without changing its basic function; may be used for testing, adjusting, calibrating, recording, or other purposes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.