WordNet (r) 3.0 (2006):
boil down v 1: be the essential element; "The proposal boils down to a compromise" [syn: reduce, come down, boil down] 2: be cooked until very little liquid is left; "The sauce should reduce to one cup" [syn: boil down, reduce, decoct, concentrate] 3: cook until very little liquid is left; "The cook reduced the sauce by boiling it for a long time" [syn: reduce, boil down, concentrate]