Ch - definition of ch by The Free Dictionary
https://www.thefreedictionary.com/ch
abbreviation for 1. (in Britain)Companion of Honour 2. (Placename) Switzerland (international car registration) [ (sense 2) from French Confédération Helvétique] Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 ch Survey., Civ. Engin. chain.
DA: 68 PA: 81 MOZ Rank: 21