depends on the department. Agency "ten codes" differ.
In my experience it refers to a "Reporting Person," but depending on how, where, or even in what department it is used, it could mean any number of things. There are no standardized lists of police jargon.
People
it amazing
It is court or police abbreviated 'lingo' meaning Felon In Possession of a Firearm.
"Def" is the shorthand text lingo for "definitely".It can also be written as "deffo", "defs" or "deffi".
Point of View
totally
Very happy
Firestone
Radio active
There is 16 gigabytes of room that is available to be used.
A smile :3