A technique is a method of doing some task or performing something. Your technique for opening drinks might be to twist the top off with your teeth. If so, your dentist better have a good tooth-repair technique.
The noun technique can also refer to someone's skillfulness with the fundamentals of a particular task. A violinist could have excellent technique, but lack passion, for example. Writers usually have very individual writing techniques: One might need to write late at night and another early in the morning; some have to write by hand on paper, while others always use the computer.
Close your vocabulary gaps with personalized learning that focuses on teaching the words you need to know.