Roundhouse/ˈraʊndhaʊs/ Definition 1 of 4Pro Tip 1/2Boxing Jargon Used specifically in boxing to describe a powerful, wide punch. The underdog surprised everyone with a swift roundhouse. Pro Tip 2/2Martial Arts Move Though it's a boxing term, 'roundhouse' is also common in various martial arts. Avoid confusing a roundhouse with other martial arts techniques.