See partnership in Webster's New World College Dictionary
noun
the state of being a partner; participation
the relationship of partners; joint interest; association
an association of two or more partners in a business enterprise
a contract by which such an association is created
the people so associated
See partnership in American Heritage Dictionary 4
(pärtˈnər-shĭpˌ)
noun
The state of being a partner.
a. A legal contract entered into by two or more persons in which each agrees to furnish a part of the capital and labor for a business enterprise, and by which each shares a fixed proportion of profits and losses.
b. The persons bound by such a contract.
A relationship between individuals or groups that is characterized by mutual cooperation and responsibility, as for the achievement of a specified goal: Neighborhood groups formed a partnership to fight crime.