You could google a bodybuilding routine (being that you don't seem to be a rookie, you could probably figure out how to perform the exercises listed) and work your A$$ off. There's no "special" exercises for becoming defined. Like mentioned above pull-ups are great for the v-taper but a bodybuilding program is what's needed.
Being defined boils down to 2 things IMO and that is DIET and HARD TRAINING. And of course, the dreaded but necessary Cardio!