To use and pass off (the ideas or writings of another) as one's own.
To appropriate for use as one's own passages or ideas from (another).
To put forth as original to oneself the ideas or words of another.
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.