Meaning of “(in) care of” in the English Dictionary

american-english dictionary

"(in) care of" in American English

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(in) care of

abbreviation c/o

at the address of:

You can write me in care of my grandmother.
Note: Used to give someone a mailing address where you can be contacted when you are staying away from home.

(Definition of “(in) care of” from the Cambridge Academic Content Dictionary © Cambridge University Press)