What is Combination?

Legal Definition
A union of different things. A patent may be taken out for a new combination of existing machinery, or machines. See 2 Mason, 112; and Composition of matter.

2. By combination is understood, in a bad sense, a union of men for the purpose of violating the law.
-- Bouviers Law Dictionary
Legal Definition
A conspiracy or confederation of men for unlawful or violent deeds. A union of different elements. A patent may be taken out for a new combination of existing machines. Stevenson Co. v. McFas-sell, 90 Fed. 707, 33 C. C. A. 249; Moore v. Schaw (O. C.) 118 Fed. 602.
-- Black's Law Dictionary
Legal Definition
A uniting of two or more persons for a common purpose.
-- Ballentine's Law Dictionary