Passive of 'to strike/hit': to be struck or beaten; to be shot. Can also mean to be subjected to something (e.g., wind or rain hitting one).
彼は試合で相手に何度も打たれたが、最後まで諦めなかった。
He was hit many times by his opponent in the match, but he didn't give up until the end.
不運にも彼は路上で撃たれて重傷を負った。
Unluckily, he was shot on the street and suffered serious injuries.
冬の海岸は風に打たれて荒れていることが多い。
Coastal areas in winter are often battered by the wind.