Dictionary.com
definitions
  • synonyms

c.o.

See more synonyms on Thesaurus.com
  1. care of.
  2. carried over.

C.O.

  1. cash order.
  2. Commanding Officer.
  3. conscientious objector.
  4. correction officer.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018