ca·hier (kä-y??)n. A report, especially one concerning the policy or proceedings of a parliamentary group.[French, notebook, from Old French quaier, from Vulgar Latin *quaternum, from Latin quatern?, group of four, from quater, four times; see kwetwer- in Indo-European roots.]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.cahier (kaje) n1. a notebook2. a written or printed report, esp of the proceedings of a meetingCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ca?hier (kæ?ye?, k?-) n., pl. -hiers (-?ye?z) a report of the proceedings of a parliamentary body. [1835?45;