public domain(n = noun.possession) - property rights that are held by the public at large;
is a kind of property right

certified public accountant, doctor of public health, domain, domain name, eminent domain, general public, in public, in the public eye, initial public offering, knowledge domain, master in public affairs, notary public, public, public address system, public assistance, public charity, public convenience, public debate, public debt, public defender, public discussion, public easement, public enemy, public executioner, public exposure, public eye, public figure, public holiday, public house, public housing, public image, public knowledge, public lavatory, public law, public lecture, public library, public mover, public nudity, public nuisance, public office, public opinion, public opinion poll, public presentation, public press, public property, public prosecutor, public relations, public relations man, public relations person, public school, public security, public servant, public service, public speaker, public speaking, public square, public toilet, public transit, public transport, public treasury, public trough, public trust, public utility, public utility company, public violence, public works, right to speedy and public trial by jury, united states public health service