1.n. In everyday usage, something that can be seen and touched.
2.n. (psychology) A person, goal, or thing toward which a feeling, attitude, or action is directed, as in ‘she was the object of his attention’; in the distinction between subject and object, the subject is active and the object is passive. See also objectification.
3.n. (philosophy) Something referred to; sometimes restricted to that which is independent of the thinking subject and external to the mind. In the Peircean model of the sign, the referent or what the sign ‘stands for’. The object divides into the immediate object (the particular idea that the sign represents) and the dynamical object (the reality indicated by that idea of the sign which only becomes known through experiencing the sign in other contexts). Unlike Saussure's abstract signified, Peirce's triadic model allocates a place for a physical reality which Saussure's model did not feature (though Peirce was not a naïve realist, and argued that all experience is mediated by signs). The term can refer to abstract concepts and fictional entities as well as to physical objects.
4.n. (traditional grammar) A major structural element in a sentence, representing the receiver or goal of an action, as distinct from the subject; a noun phrase governed by, and normally following, a transitive verb.
5.n. (computing) A single element in an object-oriented programming language.
6.v. To indicate disagreement.