WordNet records no synonym and no antonym for street name. It is the only member of each of its synsets, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an alternative name that a person chooses or is given (especially in inner city neighborhoods)
“her street name is Bonbon”
the name of a brokerage firm in which stock is held on behalf of a customer
“all my stocks are held in street name”
Synonyms, antonyms and the broader and narrower relations for street name come from Princeton University’s WordNet. Full sources and licences.