How is “care of” used?

In Red River (1948), one line is: “Well, you shot him. You can take care of him.”

Which movie is “care of” from?

The clip at the top of this page is from Red River (1948).

used when writing to sb at another person's address

Heard in 197 movies

care of sb
used when writing to sb at another person's address
Write to him care of his lawyer.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

Well, you shot him. You can take care of him.

Said in 8 films · #1