1. the ability or time to deal with a complicated situation, the amount of information that can be sent over a network connection
I don't have the bandwidth to deal with an issue that big
’Bandwith’ refers to the maximum data transfer rate on an internet connection. In modern social contexts, this is a relatively new way of describing your situation that is derived from its technical meaning. In the same way that your internet connection might not provide the bandwidth to complete a certain task or run a program, people have started saying that they don't have the bandwidth to deal with certain situations - except they are talking about their own state of mind or their busy schedules. This new meaning of 'bandwidth' is more likely to be heard in an IT context.