Street name
WordNet
noun
(1) The name of a street
(2) The name of a brokerage firm in which stock is held on behalf of a customer
"All my stocks are held in street name"
(3) Slang for something (especially for an illegal drug)
"`smack' is a street name for heroin"
(4) An alternative name that a person chooses or is given (especially in inner city neighborhoods)
"Her street name is Bonbon"