I. ˈchä-pər noun
Date: 1552
1. : one that chops
2. plural , slang : teeth
3. : a device that interrupts an electric current or a beam of radiation (as light) at short regular intervals
4. : machine gun
5. : helicopter
6. : a high-bouncing batted baseball
7. : a customized motorcycle
II. verb
Date: 1955
: helicopter