those electric buzzing things that either shave off or "buzz" off hair. ("Buzz" is due to the distinct buzzing hum that the clippers make when on.) They are generally used for quick, short, and often inexpensive haircuts.
They are generally used for guys' haircuts and their use is becoming increasingly popular; also used to "clipperize" people
He bought his own clippers so he could shave his own head daily.