a method of tending to (especially business) matters
the persons (or committees or departments etc.) who make up a body for the purpose of administering something; "he claims that the present administration is corrupt"; "the governance of an association is responsible to its members"; "he quickly became recognized as a member of the establishment"
a political organization within the Democratic Party in New York City (late 1800's and early 1900's) seeking political control by corruption and bossism