Buzz
Cutting all the hair to one short length with clippers, as in the buzz cut.
Also: buzzing, clipper cut
Buzzing means running clippers with one guard setting over the whole head, so all the hair is the same short length. It is quick, needs no styling and grows out evenly. It is the basis of the buzz cut, the induction cut given to many military recruits, and the crew cut, which leaves the top a little longer. Clippers are run against the direction of growth for the closest result. The name echoes the sound of electric clippers.