strong, tough, muscular.
|Campus Sl. Sept.|
|Online Sl. Dict. [Internet] diesel adj 1. muscular. (‘Check out his body, he’s diesel.’).|
|Campus Sl. Nov. 2: diesel – very muscular: After three years of going to the gym, my brother is diesel.|
|Twitter 27 May [Internet] There’s woman in #N7 (what we used to call ‘a real Diesel number’: is that still OK?) has *every inch* of her neck, face, skull tattoo’d.|