Noun
a noncommissioned officer who instructs recruits in military marching and discipline
Source: WordNetNow, as the drill instructor forced the prisoners to run around the boot camp like mules, it drove Dio not knowing if she was okay. Source: Internet
It took D'Onofrio nine months to shed the excess weight. citation citation * R. Lee Ermey as Gunnery Sergeant Hartman, a Parris Island drill instructor who trains his recruits to transform them into Marines. Source: Internet
Ermey actually served as a U.S. Marine drill instructor during the Vietnam War. Source: Internet
He was at Paris Island and Camp Lejeune as a drill instructor. Source: Internet
He served in the Army Air Corps, first as a drill instructor and then teaching meteorology at air bases around the country. Source: Internet
The 20-year-old, Taylor, Mich., native reportedly had an altercation with his drill instructor, Gunnery Sgt. Joseph Felix, moments before the fall, according to a Corps investigation. Source: Internet