From Longman Dictionary of Contemporary Englishcall back phrasal verb1 call (somebody) backTELEPHONE to telephone someone again, for example because they were not at home when you telephoned last time I’ll call back later. Can you ask John to call me back when he gets in?2 British EnglishRETURN to return to a place you went to earlier You could call back to collect her at noon. → call→ See Verb table
Examples from the Corpus
call back• After a week, Shaun calls back for the full container and drops off a new one.• Since the publisher did not call back, Hathaway called the magazine herself.• She says your child has been admitted but call back later to see if she is going to stay overnight.• "Would you like to leave a message?" "No, that's okay. I'll call back later."• Never tell anyone that you are alone in the house - ask them to call back later.• "Does Jake want me to call him back?'' "No, he said to meet him at eight o'clock.''• Sometime after 10 p. m., the groups were called back, one at a time.• Carol called him again and he called back that he wouldn't be long.• He sympathized with our plight but suggested that I call back the next day, when the Florida office was open.• Shortly thereafter, Odom called back to say the warning indicators had changed to an all-out attack of 2,200 missiles.From Longman Business Dictionarycall back phrasal verb1[transitive] call something → backFINANCE to ask for something that you have lent or given to be paid or given back to youIn conditions of liquidity shortage they will call back these loans.2[intransitive, transitive] call somebody → back to telephone someone again, usually because one of you was not in or was busy at the time of the first callNo problem, I’ll call back later.Can you ask him to call me back when he gets in?3[intransitive] to visit a person or place again in order to do somethingI’ve got to do some shopping now. I’ll call back later for my order. → call→ See Verb table 