send back for

send (someone or something) back (to some place) for (something)

1. To instruct or direct someone to return (to some place) to retrieve or accomplish something. The first noun or pronoun can also come after "back." I realized I had left one of the binders for the meeting in the office, so I sent my assistant back for it. The agency is sending me back to the company for a follow-up investigation.
2. To instruct that something be returned (to some place) for some reason or to have something done. The first noun or pronoun can also come after "back." We sent the machine back for some repairs. The customer sent the meal back to the kitchen for being served cold.
See also: back, send
Farlex Dictionary of Idioms.

send someone back for something

to cause someone to return to get something. He came without it, so I sent him back for it. Ted sent Roger back for the rest of the groceries.
See also: back, send
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • ask back
  • not do (someone or oneself) any favors
  • back into
  • back into (someone or something)
  • rescue from
  • rescue from (someone or something)
  • identify with
  • attune to
  • orient to
  • orient to (something)
References in classic literature
"I think that is good advice to follow," put in Tom, "for we do need our goods; and if we reached the settlement ourselves, we would have to send back for our things, with the uncertainty of getting them all."