Power moves are dance moves which are loosely defined as moves relying on speed, momentum, and acrobatic elements for performance.
They are prominent in B-boying, often the centerpieces of routines featuring the other elements (toprock, downrock, and freezes) that make up breaking.
[1] Power moves are closer to gymnastics than dancing.
B-boys who focus heavily on power moves and execute them as a main part of their routines are often called "power heads".
[2]