<p><strong>Adjective</strong></p><ul><li>working or acting together willingly for a common purpose or benefit.</li><li>demonstrating a willingness to cooperate: The librarian was cooperative in helping us find the book.</li><li>pertaining to economic cooperation: a cooperative business.</li><li>involving or denoting an educational program comprising both classroom study and on-the-job or technical training, especially in colleges and universities.</li></ul><p><strong>Noun</strong></p><ul><li>a jointly owned enterprise engaging in the production or distribution of goods or the supplying of services, operated by its members for their mutual benefit, typically organized by consumers or farmers.</li><li>Also called co-op.</li><li>a building owned and managed by a corporation in which shares are sold, entitling the shareholders to occupy individual units in the building.</li><li>an apartment in such a building.</li></ul>