The crossword solution for the term 'PART OF MANY A STREET NAME' is 'ORDINAL', which is a seven-letter word. An ORDINAL is a type of adjective that expresses the order of something in a sequence, such as first, second, third, etc. It is often used in street names to indicate the order of the street in a particular area. For example, if there are three streets in a neighborhood, they may be named First Street, Second Street, and Third Street.