معرقل

Also known as impediment, barrier, stumbling block

thumb|Obstacle to traffic caused by the Ferguson landslide in the state of [[California (USA)]] An obstacle (also called a barrier, impediment, or stumbling block) is an object, thing, action or situation that causes an obstruction. A obstacle blocks or hinders our way forward. Different types of obstacles include physical, economic, biopsychosocial, cultural, political, technological and military.