Dictionary.com
definitions

ch.

  1. chaplain.
  2. chapter.
  3. Chess. check.
  4. chief.
  5. child; children.
  6. church.

Ch.

  1. Chaldean.
  2. Chaldee.
  3. Television. channel.
  4. chapter.
  5. Château.
  6. Chess. check.
  7. China.
  8. Chinese.
  9. church.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for ch.

ch.

abbreviation for
  1. chain (unit of measure)
  2. chapter
  3. chess check
  4. chief
  5. church
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012