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co·write(kō-rīt′) or co-write
tr.v. co·wrote (-rōt′), co·writ·ten (-rĭt′n), co·writ·ing, co·writes or co-wrote or co-writ·ten or co-writ·ting or co-writes
To write jointly or in collaboration with another author.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
vb (tr) , -writes, -writing, -wrote or -written
(Journalism & Publishing) to write (something) in collaboration with another writer
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014