Source : WordNet®

street name
     n 1: an alternative name that a person chooses or is given
          (especially in inner city neighborhoods); "her street
          name is Bonbon"
     2: a slang term for something (especially for an illegal drug);
        "`smack' is a street name for heroin"
     3: the name of a brokerage firm in which stock is held on
        behalf of a customer; "all my stocks are held in street
        name"
     4: the name of a street