Definitions for c/o
Random House Webster's College Dictionary
Category: Geography (places)
* Chem. Symbol..
Ref: var. of com- 2 before a vowel, h, and gn
certificate of origin.
Category: Military, Titles, Associations, Organizations
Kernerman English Learner's Dictionary
care of; written on an envelope before the name of the person who will receive a letter for sb else