Mulholland is a proper noun, used chiefly as a surname and place name, notably in Los Angeles (Mulholland Drive). It refers to a family name of Irish origin that has become associated with a famous road and associated landmarks. In pronunciation, it typically emphasizes the second syllable, yielding a two-myll-huh-luhnd rhythm, and is pronounced with a light, unstressed final syllable in natural English.
Full pronunciation guide