drilled (Adjective) — Trained in a skill by repetitious practice. ex. "well-drilled in military procedures"
drilled (Verb) — Make a hole, especially with a pointed power or hand tool. ex. "don't drill here, there's a gas pipe" ex. "drill a hole into the wall" ex. "drill for oil"
drilled (Verb) — Learn by repetition. ex. "We drilled French verbs every day"
drilled (Verb) — Teach by repetition.
drilled (Verb) — Undergo military training or do military exercises.