lbw is a cricket word. It is a way your time batting can end. The other team sends the ball; if the ball hits your leg — or the pad on your leg — while you are standing in front of the wicket (the three sticks behind you), and the umpire believes the ball would have hit those sticks, you are out lbw. The letters stand for “leg before wicket.” It is one of the usual ways to be out, and also one of the ones people argue about, because the umpire has to imagine where the ball was going. You write lbw in the score book. People who do not follow cricket will not know it. Though actually, Taiwan does not play much cricket, so you will mostly meet lbw in English news about England, India, or Australia, or in a textbook sports list. It is not a weight in pounds, even though it starts with lb.