fundamental_law, organic_law, constitution: law determining the fundamental political principles of a government constitution, establishment, formation, organization, organisation: the act of forming something; "the constitution of a PTA group last year"; "it was the establishment of his reputation"; "he still remembers the organization of the club" constitution, composition, makeup: the way in which someone or something is composed Constitution, Old_Ironsides: United States 44-gun frigate that was one of the first three naval ships built by the United States; it won brilliant victories over British frigates during the War of 1812 and is without doubt the most famous ship in the history of the United States Navy; it has been rebuilt and is anchored in the Charlestown Navy Yard in Boston