Green’s Dictionary of Slang

1. a fellow, a man, used in direct address.

1959

A. Anderson ‘Dance of the Infidels’ in Lover Man 157: Ain’t nothing shaking, huss.

2. a smart, stylish man’s suit.

1965

Esquire July 44: Hus—for hustler—vines. Hus vines are baggy pants, ‘long-collar’ shirts, the kangaroo shoes worn by hustlers....The addition of...long-toe shoes...makes a thing hus. An Ivy hus would be a natural-shoulder suit, cuff-link shirt, and those shoes [HDAS].