The social world of linguistic communication, intersubjective relations, knowledge of ideological conventions, and the acceptance of the law (also called the "big Other"). Once a child enters into language and accepts the rules and dictates of society, it is able to deal with others. The acceptance of language's rules is aligned with the Oedipus complex, according to Lacan. The symbolic is made possible because of your acceptance of the Name-of-the-Father, those laws and restrictions that control both your desire and the rules of communication. Through recognition of the Name-of-the-Father, you are able to enter into a community of others. The symbolic, through language, is "the pact which links... subjects together in one action. The human action par excellence is originally founded on the existence of the world of the symbol, namely on laws and contracts" (Freud's Papers 230). The symbolic order works in tension with the imaginary order and the Real. It is closely bound up with the superego and the phallus. See the Lacan module on the structure of the psyche.
In Jacques Lacan's theory of psychic structures, the Symbolic refers to the realm of language into which the child enters under the impetus of the Name of the Father. The child's world, which has already been transformed by the Imaginary spatial identifications of the Mirror Stage, now becomes bound up in signifying chains linked to a master signifier. Some leftover of the Real remains, however, unexpressed in language, and resists integration into the Symbolic.