Definition from Wiktionary, the free dictionary
See also boildown
- (intransitive) To become reduced (to the most central elements or ingredients: to the essence, core, or implication for action).
- So what this boils down to is that you still owe me that fifty bucks.
- (transitive) To reduce (to the most central elements or ingredients: to the essence, core, or implication for action).
- My dissertation is 342 pages long, and I'm required to boil it down to a one-page abstract?!?
- (transitive and intransitive) Used other than as an idiom: see boil, down.
- He boiled the soup down so it wouldn't be so weak.
Usage notes 
- Usually followed by to, as in some of the examples above.
- What usually get boiled down are problems, arguments, statements, etc.
- (become reduced): come down to