Then in you opinon what does it mean? Inquiring minds want to know.
Here's how I understand it based on what I've read from "defund the police" advocates.
Given the well-documented issues with policing in the US, ideally we could just
reform policing by doing things like revising training to emphasize de-escalation, not relying on police to solve every problem/issue that pops up in a community (mental health issues, domestic disputes, property disputes, fender-benders), scaling back use of deadly force, rethinking how to deal with non-violent unarmed suspects when they flee, and a host of other things. Most, if not all, of these have been proposed and advocated for years, and in some cases communities have attempted to institute such reforms.
The problem is, in many locales there are institutional obstacles to doing so, such as police unions, long-term contracts, and ingrained culture within police departments, and as a result the problematic status quo persists.
That's where "defund the police" comes in. That approach calls for completely tearing down the entire policing system (locally) and institutions and
rebuilding them from the ground up. So rather than trying to work around all the obstacles that have been preventing meaningful reform, you just do away with them altogether.
So if for example, your goal is to stop having the police respond to mental health crises and have mental health professionals handle them instead, you're going to need to move some funding away from the police department and into mental health agencies. "Defund the police" says don't bother trying to convince the police union to support that, nor should you waste time trying to revise your existing contracts. Instead, just rip it all up and start over.
Now, that's not the only version of "defund the police" I've seen. There are also versions that are more about what I described above, redirecting
some of the police departments' money to other social services like mental health.
You can also read this:
7 myths about “defunding the police” debunked (brookings.edu)
Hope that helps.