drilling

(noun) the act of drilling. Synonyms: boring.

(noun) 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. Synonyms: bore, drill. Examples: "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."

(verb) train in the military, e.g., in the use of weapons. Synonyms: drill.

(verb) learn by repetition. Synonyms: drill, exercise, practice, practise. Examples: "We drilled french verbs every day." "Pianists practice scales."

(verb) teach by repetition. Synonyms: drill.

(verb) undergo military training or do military exercises. Synonyms: drill.