masc. proper name, Italian, literally "leader," of Germanic origin (see guide (v.)). As a type of gaudy machoism often associated with Italian-Americans, 1980s, teen slang, from the name of character in Hollywood film "Risky Business" (1983).
Guggenheim
guidance
guide
guideline
guide-post
Guido
guidon
Guidonian
guild
guilder
guile