belly button
n.— «Hakim was a negotiator for the arms for hostages deal and as his embarrassed testimony revealed, he also had a hand in setting up a secret account to provide for the family of the ring leader of the operation, an account with a code name. ALBERT HAKIM, Arms Dealer: Actually the complete name is belly button. UNIDENTIFIED CONGRESSMAN: Does it refer to a person? Mr. HAKIM: Yes it does. CONGRESSMAN: Who? Mr. HAKIM: Lt. Colonel North.» —“All Things Considered: Where Are They Now—The Iran Contra Cast” NPR Jan. 18, 1994. (source: Double-Tongued Dictionary)