waterfall
n.— «Last month, the retirement board, which Aguirre alleges covered up the city’s pension problem, eliminated an accounting method known as the “waterfall” that hid some of the city of San Diego’s pension obligations. Aguirre and outside consultants have condemned the accounting gimmick.» —“Without Paperwork, Reforms Lie Idle” by Evan McLaughlin Voiceofsandiego.org (California) Nov. 10, 2006. (source: Double-Tongued Dictionary)