What is the meaning of drilling?

noun

• The act of drilling.
  • synonyms: boring
• The act of drilling a hole in the earth in the hope of producing petroleum.
  • synonyms: boring, oil production

verb

• Make a hole, especially with a pointed power or hand tool.
  • usage: "don't drill here, there's a gas pipe"; "drill a hole into the wall"; "drill for oil"; "carpenter bees are boring holes into the wall"
  • synonyms: bore, drill
• Train in the military, e. G., in the use of weapons.
  • synonyms: drill
• Learn by repetition.
  • usage: "We drilled French verbs every day"; "Pianists practice scales"
  • synonyms: drill, exercise, practice, practise
• Teach by repetition.
  • synonyms: drill
• Undergo military training or do military exercises.
  • synonyms: drill