The crossword solution for the term 'Sleekly Designed, For Short' is AERO, which stands for Aerodynamic. Aerodynamics is a branch of physics that studies the motion of air and other gaseous fluids, as well as the forces acting on objects in motion relative to the fluid. It is used to design aircraft, automobiles, and other objects that move through the air or other fluids. The term 'sleekly designed' refers to the aerodynamic design of an object, which is designed to reduce drag and increase efficiency.