Definition of "boil down"

boil down

verb
third-person singular simple present boils down, present participle boiling down, simple past and past participle boiled down
1. (transitive and intransitive) To reduce in volume by boiling.
2. (intransitive) To become reduced (to the most central elements or ingredients: to the essence, core, or implication for action).
  Quotations
  For England, everything now boils down to what happens against Poland on Tuesday.
  2013 October 11, Daniel Taylor, The Guardian‎
3. (transitive) To reduce (to the most central elements or ingredients: to the essence, core, or implication for action).