1. A heterosexual male.
  2. In comedy, the nearest thing to a center of gravity, allowing the remainder of the team to Do The Funny. Not necessarily the unfunny one--George Burns (with wife Gracie Allen) could be a hoot, despite being the calm, cool sidekick; Dan Rowan did the same with Dick Martin, and Moe Howard, to an extent, with the Three Stooges. Even if unfunny, Bud Abbott was integral to Lou Costello. But Zeppo, however funny IRL, was a fifth wheel in the Marx Brothers.