Green’s Dictionary of Slang

a Los Angeles male homosexual prostitute who works Sunset or Hollywood Boulevards.

1986–7		Maledicta IX 145: In Los Angeles […] the boulevard boys on Selma, Hollywood, and Sunset boulevards try to detect the freebies, loonies,and undercover cops.
2000		Desdemona at www.asstr.org 🌐 Dick had come to Cherry on pins and needles after he’d been with a boulevard boy who’d shared more than just a dose of cock snot.

(US) a taxi-driver; esp. a reckless driver whose driving style is uninhibited by the presence of other drivers, let alone pedestrians.

1944		in ‘The Jiver’s Bible’ in D. Burley Orig. Hbk of Harlem Jive.
1981		J. Wambaugh Glitter Dome (1982) 50: A boulevard cowboy named William Bonney Anderson, a.k.a. Billy the Kid, had blown away three good citizens of Hollywood.

(US) a Los Angeles drug user who frequents Sunset or Hollywood Boulevards.

1981

J. Wambaugh Glitter Dome (1982) 190: I never bought no typewriters from boulevard junkies!