A callback is a function that is passed as an argument to another function and is executed when that other function has finished its work.
Usage examples
In programming, a callback is a function that is passed as an argument to another function and is expected to be called later. For example, you can create a callback function that gets executed when a button is clicked on a website.
In customer support, a callback is a feature that allows customers to leave their contact details and request a call back from a representative instead of staying on hold. Say, "Leave your name and number, and we will callback within 24 hours."
In business, a callback can refer to a follow-up call or meeting with a potential client or customer. For instance, after a sales presentation, you might say, "I will schedule a callback with you next week to discuss further details."
In the field of therapy, a callback can mean a secondary appointment or session arranged to address specific concerns or continue the ongoing treatment. For example, a therapist might say, "Your next callback appointment will be on Friday at 3 pm."
In comedy or entertainment, a callback is a recurring reference or joke that is repeated later in a performance, often to ensure a comedic payoff. A comedian might say, "Remember that funny story from earlier? Well, here's a callback to make it even funnier!"
If you are qualified for a job and applied for numerous classified ad jobs but don't get callbacks for interviews, then the problem may lie with your resume. (thejobnetwork.com)
The limited number of callbacks for resumes isn't the only reason to play the numbers game. (topresume.com)
Not getting callbacks from the employers when you send out your resume? (itunes.apple.com)