This context come from the movie "Silence Of The Lambs" Spoilers!!!
"Crawford: Starling, Starling, we know who he is, and where he is. We're on our way right now.Johns Hopkins came up with some names. We fed him into Known Offenders. Subject's name is 'Jamie Gumb,' AKA 'John Grant.' Lecter's description was accurate, he just lied about the name. Listen to this. Customs had some paper on him. They stopped a carton two years ago at LAX - live caterpillars from Surinam. The addressee was a Jame Gumb."
"feed into" (McGraw-Hill Dictionary of American Idioms and Phrasal Verbs):
to put something into something; to push a supply of something into something.
E.g: Did you feed the data into the computer?
I think Crawford means that he put the name of the killer into the computer which has a program containing a record of "known offender" and the name matched the one in the record. In this case wouldn't "known offender" be a metonymy or some kind of inversion of metonymy?
Is my interpretation of the sense correct?